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(The Witch of the Falling Kingdom Arc)
 
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== Personality ==
 
== Personality ==
Cocytus has a warrior personality, respecting anyone with a fighting spirit, and the heart of a warrior. As a Floor Guardian, he is in charge of Nazarick's martial defense. Cocytus is loyal to a fault. This is shown when he prevented Demiurge, under Ainz's order, from interfering in Ainz's fight against Shalltear, even though he too also feared the possibility of losing his master.
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Cocytus has a warrior personality, respecting anyone with a fighting spirit, and the heart of a warrior. As a Floor Guardian, he is in charge of Nazarick's martial defense. Cocytus is loyal to a fault that he even allows his master to fight the rebel Shalltear alone as the former was ordered to do. This is shown when he prevented Demiurge, under Ainz's order, from interfering in Ainz's fight against Shalltear, even though he too also feared the possibility of losing his master. As Cocytus is a warrior by heart, he likes a good battle and has a sense of honor. He is not above the thought of condescending his opponents, but rather show admiration of their tenacity to fight. Unlike his isolationist and xenophobic colleagues, he is more accepting and open to the idea of allowing outsiders like the lizardmen to join Nazarick. He also appears to enjoy watching how battles play out as a bystander, excited to see what tactics and strategies his enemy use.
   
As Cocytus is a warrior by heart, he likes a good battle and has a sense of honor. Unlike his isolationist and xenophobic colleagues, he is more accepting of allowing outsiders to join Nazarick.
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Though Cocytus takes pride in his position as Nazarick's defender, he is somewhat envious of his fellow Floor Guardians. Cocytus likens himself as the 'sword' of Ainz Ooal Gown, that executes his master's wishes. He thinks the only way he could prove his worth to Ainz is by actually defeating the invading forces that would pose a threat to Nazarick. Cocytus is not fond of asking for assistance in order to save face, but when the need arises, he will put his pride aside to accomplish his task. For that reason, he was willing to accept a personal defeat but not one that will disgrace and humiliate the Great Tomb of Nazarick and the 41 Supreme Beings. After losing his army to the lizardmen, he starts to reflect more on his actions and no longer wishing to obey his master's order blindly without first offering his own input on it. With the task of now administering the Lizardman Village, he has also began to shoulder more responsibilities that were expected him to carry out by his master.
   
Though Cocytus takes pride in his position as Nazarick's defender, he is somewhat envious of his fellow Floor Guardians. Cocytus likens himself as the 'sword' of Ainz Ooal Gown, that executes his master's wishes. He thinks the only way he could prove his worth to Ainz is by actually defeating the invading forces that would pose a threat to Nazarick. Cocytus is not fond of asking for assistance in order to save face, but when the need arises, he will put his pride aside to accomplish his task.
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Knowing his defeat, Cocytus doesn't mind if his master reprimands him. He was tolerant about it to the point that he had already prepared himself to be slain if given the order to do so. In other words, Cocytus was ready to commit suicide in order to erase the stain of his dishonor for losing to the enemy. What Cocytus felt most afraid of is the notion that he could possibly disappoint his master and be abandoned because of it. He was sensitive of his failure having an affect on the rest of his fellow NPCs that his death alone will not be enough to atone. Cocytus failing his first campaign put a mental toll on his state of mind where he tried his best to console himself from seeing such a scenario happen. When seeing Ainz go out of his way to do tasks still, Cocytus can't help but sometime also feel sadly inadequate and incompetent as he himself couldn't be able to fulfill the work in his master's stead. He is also a person who is diligent with whatever task was given to him such as training either alone, with Ainz or with the lizardmen in swordsmanship.
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Ever since the end of the [[Lizardmen War]], he became like a teacher-like figure to the lizardmen, strictly teaching them to abide by the rules of Nazarick and how they respectfully act around Ainz. This led Cocytus to becoming a more outspoken person about the decisions he need to wisely and carefully choose as Ainz wishes him to think of ways in bettering Nazarick. As a result, he starts to develop confidence and trust in his judgement of what to do rationally during wars. Cocytus yearns for Ainz to produce a heir for Nazarick, to which he could look after and train under him. He was willing to train either Ainz or his future child about direct combat physically and how to approach these kind of foes. Based on his conversation with Shalltear, he fondly enjoys the idea of honing and crossing blades with his master in the ways of swordsmanship if permitted the chance to duel him. He takes thrill in dueling worthy warriors who caught his attention, looking to challenge their resolve head on and even possibly, recruit them if a chance presents itself.
   
 
== Background ==
 
== Background ==
Cocytus was created by Warrior Takemikazuchi as the Floor Guardian of the 5th Floor of the Great Tomb of Nazarick. He was programmed to possess knowledge on all of the Supreme Beings' Divine Weapons.
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Cocytus was created by Warrior Takemikazuchi as the Floor Guardian of the 5th Floor of the Great Tomb of Nazarick. In his setting, he was programmed to possess every sort of knowledge on all of the 41 Supreme Beings' Divine Weapons. Nonetheless, Cocytus admits that he had never once seen such weapons and its powers utilized in battle before until his master Ainz Ooal Gown equipped it in combat against Shalltear Bloodfallen. Like his creator, he also sees himself as a prideful warrior who admires the fighting spirit of his foes, giving them the honor and respect they deserve when faced against the former in combat.
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Whenever he emerge triumphantly against his adversary in combat, Cocytus tends to lay claim of ownership over the weapon used by them, adding it to his own collection of weapons regardless of its value. Furthermore, Cocytus would even considered keeping the corpse of the warrior he slain as trophies for safekeeping, making sure to have them kept well-preserve and intact via ice to bring back home with him. No matter how strong or weak the warrior is to him, Cocytus approach them without showing any bias or arrogance all so that the former seeks to have a proper match where they can fight to the death.
   
 
== Chronology ==
 
== Chronology ==
 
=== The Undead King Arc ===
 
=== The Undead King Arc ===
 
{{Main|Overlord Volume 01|The Undead King Arc}}
 
{{Main|Overlord Volume 01|The Undead King Arc}}
When Momonga calls for the Floor Guardians to the 6th Floor, Cocytus is the second to arrive. He stops the argument between [[Aura Bella Fiora|Aura]] and [[Shalltear Bloodfallen|Shalltear]] in front of their master. After all of the Floor Guardians arrive, he pays his respects with the rest of them to Momonga.<ref>''[[Overlord Volume 01]] Chapter 2: Floor Guardians''</ref>
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When Momonga calls for the Floor Guardians to the 6th Floor, Cocytus is the second to arrive after [[Shalltear]]. During his arrival at the [[Amphitheater]], he stops the argument between [[Aura Bella Fiora|Aura]] and Shalltear in front of their master. As there were no intruders on the 5th Floor of Nazarick, Cocytus briefly discusses with Ainz about his free time there where he had been training in order to be ready for deployment at any time. Hearing Ainz's praise of his hard-work, Cocytus appreciates his master's kind words and felt that the task was no longer tiring for him to do. The brief discussion between the two ends when Cocytus informs his master that the last two of the Floor Guardians, [[Albedo]] and [[Demiurge]] have arrived.
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Once all of the Floor Guardians have arrived to their meeting place, Cocytus pays his respects with the rest of them to Momonga, describing the greatness of their master.<ref>''[[Overlord Volume 01]] Chapter 2: Floor Guardians''</ref> Right after Momonga left, Cocytus and his fellow Floor Guardians shared what their impression was towards Ainz after feeling the power of his Despair Aura emanated by his master. Along the way, Cocytus conduct talks with Demiurge and Mare about the future of Nazarick.
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At first, he thought it was disrespectful of them to consider Momonga's successor when they are supposed to serve their master faithfully as they were created for this purpose. However, Cocytus's thoughts change the moment Demiurge reasoned with him that they should also consider pledging their loyalty to Momonga's future heir as well much to his interest. He began daydreaming of a possible scenario where Momonga had an heir and that it started calling him its Uncle. He was happily imagining himself as a cool old uncle, loyally serving Momonga’s heir until Demiurge brought him back to reality. According to Cocytus, it was everything he have ever dreamed of happening.<ref>''[[Overlord Volume 01]] Intermission''</ref>
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After he and the rest of the Floor Guardians were dismissed by the Overseer to carry out their respective duties, it was said that he was tasked with supervising Nazarick's perimeter security.<ref>''[[Overlord Volume 01]] Chapter 4: Duel''</ref>
   
 
=== The Emissary of the King Arc ===
 
=== The Emissary of the King Arc ===
 
{{Main|Overlord Blu-ray 01 Special|The Emissary of the King Arc}}
 
{{Main|Overlord Blu-ray 01 Special|The Emissary of the King Arc}}
Cocytus is paid a visit by Ainz's [[Death Knight]] on his floor. The Floor Guardian shows his guest hospitality, even shaking the undead's hand as they serve the same master. After the undead asks questions on who Cocytus is the friendliest with in Nazarick, he expresses that it would be Demiurge, [[Kyouhukou]], [[Grant]], and [[Gashokukochuuou]]. As for his desires, it would be to spar with Sebas Tian, Albedo, and even Ainz if permitted. Another wish is that he wants Ainz to have an heir so that the future of the Guardians will be secure and wants the chance to train said heir.<ref>''[[Overlord Blu-ray 01 Special]]: The Emissary of the King''</ref>
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Cocytus is paid a visit by Ainz's [[Death Knight]] on his floor. The Floor Guardian shows his guest hospitality, even shaking the undead's hand as they serve the same master. After the undead asks questions on who Cocytus is the friendliest with in Nazarick, he expresses that it would be Demiurge, [[Kyouhukou]], [[Grant]], and [[Gashokukochuuou]]. He states that there is no creation of the 41 Supreme Beings whom he do not get along, having only speak to them but not met them in person. For that reason, he wanted Ainz's permission to arrange some time in visiting them and deepen their friendship. As for his other desires, it would be to spar with Sebas Tian, Albedo, and even Ainz if permitted. Another wish is that as a loyal warrior, Cocytus wants Ainz to have an heir who he can look after and protect so that the future of the Guardians will be secure. At the same time, he wants the chance to train said heir on how to deal with any enemies such as melee attackers that may try to harm it while under his protection. Without one, he fears that Nazarick denizens will result to infighting disputes within the tomb emotionally and ideologically.<ref>''[[Overlord Blu-ray 01 Special]]: The Emissary of the King''</ref>
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=== The Guardians' Vacation Arc ===
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{{Main|Overlord Blu-ray 02 Special|The Guardians' Vacation Arc}}
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When Ainz suggested giving the Guardians vacation off from their work time, Cocytus tells his master he is doing fine and not overexerting himself much to his master's insistence. Cocytus informs Ainz that he cannot grow any larger than his current form, telling him that he had already completed his life cycle. He recommends his master to let him use items as a substitute for sleep. In the end, he gave in to Ainz's order and decided to take a break and rest.
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During a private meeting with the Guardians, he allows Sebas entry into their conference room under the pass code: All Glory in this World Belongs to Nazarick. Cocytus acknowledges that Demiurge's prediction was spot on about Ainz continuing to work while they on the other hand, are resting. Seeing the results of Ainz's earlier health examination by Sebas, he thinks it is not a good sign for their master. He believes the color of the health exam represents some some sort of meaning like "So black-hearted I'm going to die" that are unclear to him much to his confusion. Cocytus presumes that it means Ainz is under the influence of an unknown [[World Item]]'s effect.
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Cocytus reassures everyone that what they do for Ainz should not be taken as disloyalty as long as they are having this discussion for the sake of their master. He admits to not being able to pick up on Ainz's hidden meaning of why their master decided to give them break time, respecting Demiurge's keen insight on how that may have been the case for them.<ref>''[[Overlord Blu-ray 02 Special]]: The Guardians' Vacation Arc''</ref>
   
 
=== The Bloody Valkyrie Arc ===
 
=== The Bloody Valkyrie Arc ===
 
{{Main|Overlord Volume 03|The Bloody Valkyrie Arc}}
 
{{Main|Overlord Volume 03|The Bloody Valkyrie Arc}}
Cocytus is ordered to restrain [[Demiurge]] from interfering with the fight between Ainz and Shalltear.<ref>''[[Overlord Volume 03]] Chapter 4: Before the Death Match''</ref> When Ainz emerges victorious from his battle, he and the other Floor Guardians beg him to never do such a thing again, and to allow them to handle any future incidents that may come from here on out.<ref>''[[Overlord Volume 03]] Chapter 5: Player Vs Non Player Character''</ref>
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Cocytus is ordered to restrain [[Demiurge]] from interfering with the fight between Ainz and Shalltear. As a result, when Demiuge attempted to go and assist his master, Cocytus quickly block the Floor Guardian from leaving by brandishing his weapon in front of it.
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While so, he engaged in conversations with Albedo and Demiurge about Ainz's decision to fight the vampire alone. Cocytus found his master's strategy when dealing with Shalltear to be strange much to his confusion. He reasoned with Albedo that a sequential attack would be safer to do where they could attack in waves and wear down Shalltear’s HP and MP which Ainz would have done rationally. His reasoning was met with acceptance by Demiurge as he and the demon both agreed that their master was lying to them in order to hide something.
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Nonetheless, Cocytus and Demiurge were told by Albedo that Ainz is a different person than he was before Shalltear's betrayal which was why the two are advised to have faith in their master. To inform the two about Ainz's chance of defeating Shalltear, he states that it was seven to three.
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When Demiurge threaten Albedo to step down as the Guardian Overseer in the event that Ainz loses the battle with Shalltear, he was angered by his colleague's words. He calls Demiurge's suggestion as treacherous since that position was given to Albedo by the 41 Supreme Beings.<ref>''[[Overlord Volume 03]] Chapter 4: Before the Death Match''</ref>
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As he watch how the fight between Ainz and Shalltear play out, Cocytus can't help but voice his astonishment, amazement, and excitement at seeing his master freely used the equipment and items formerly used by the Supreme Beings respectively. Although Cocytus was confident more than ever that Ainz could win the battle against Shalltear, Demiurge thinks otherwise due to his lack of warrior knowledge. Cocytus enlightens him about Shalltear abandoning her defense for an all-out attack is what he would have also done if he was in the same situation as her. Although Demiurge felt impressed by his explanation, Cocytus don't think so highly of his knowledge as he only know the weapons' effects and names.
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With the battle almost reaching its conclusion, Cocytus acknowledged and admired how the entire fight from start to end has gone all according to Ainz's plan. After Ainz emerges victorious from his battle, he and the other Floor Guardians beg him to never do such a thing again, and to allow them to handle any future incidents that may come from here on out. Once Shalltear was revived, he advised his Ainz to teach the vampire a stern lesson for messing up on not only her mission but for betraying their master and Nazarick as well.<ref>''[[Overlord Volume 03]] Chapter 5: Player Vs Non Player Character''</ref>
   
 
=== The Show Must Go On! ===
 
=== The Show Must Go On! ===
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=== The Sealed Evil Tree Arc ===
 
=== The Sealed Evil Tree Arc ===
 
{{Main|The Sealed Evil Tree|The Sealed Evil Tree Arc}}
 
{{Main|The Sealed Evil Tree|The Sealed Evil Tree Arc}}
Cocytus is summoned to the center of the Tob Forest to fight against [[Zy'tl Q'ae]]. He is ordered to fight as a team with the Floor Guardians. However, he keeps forgetting and twice attacks the treant with overwhelming force.<ref>''[[Overlord Volume 04|Overlord Volume 04 Special Drama CD]]: The Sealed Evil Tree Arc''</ref>
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Cocytus is summoned to the center of the Tob Forest to fight against [[Zy'tl Q'ae]]. He is ordered to fight as a team with the Floor Guardians. However, he keeps forgetting and had attack the treant twice with overwhelming force until being reprimanded by Albedo to reevaluate their master's order.<ref>''[[Overlord Volume 04|Overlord Volume 04 Special Drama CD]]: The Sealed Evil Tree Arc''</ref>
   
 
=== The Lizard Man Heroes Arc ===
 
=== The Lizard Man Heroes Arc ===
 
{{Main|Overlord Volume 04|The Lizard Man Heroes Arc}}
 
{{Main|Overlord Volume 04|The Lizard Man Heroes Arc}}
Cocytus is ordered to annihilate the [[lizardmen]] and commands the undead army of Nazarick. Seeing his army being defeated by the lizardmen, Cocytus requests advice from Demiurge, who he considers to be his rival and does not want to ask for help, but has no other choice. He deploys [[Iguva=41]] to the battlefield. Seeing Iguva=41 being destroyed and his army being defeated by the lizardmen, he realizes that his mission to annihilate the lizardmen has failed. Cocytus is surprised at his defeat and feels ashamed for losing. This leaves him no other choice but to return to Nazarick with a sense of defeat. Still, he is deeply impressed by the lizardmen's victory over him.<ref>''[[Overlord Volume 04]] Chapter 3: Army of Death''</ref> After his failure, Cocytus asks Ainz if they could spare the lizardmen and make them a part of Nazarick, to which Ainz agrees.<ref>''[[Overlord Volume 04]] Chapter 4: The Dawn of Despair''</ref>
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Cocytus is ordered by Ainz to annihilate the [[lizardmen]] and commands the undead army of Nazarick. During the war council, he instructed his vassals to tidy up their table so that Entoma can prepare a spot for the set of [[Message Scroll]]s and [[Teleportation Scroll]]s to be placed on. Once Cocytus received the scrolls, he was inform by the insect maid that they were made with the skin that Demiurge worked hard to obtain. He was suggested to contact Ainz for feedback if any problems arise regarding their use. Nonetheless, he was bitter to see Demiurge has pulled even further ahead of him after aiding his master with the making of these scrolls.
   
To redeem his failure, Cocytus is ordered by Ainz to do battle alone against the lizardman heroes led by [[Shasuryu Shasha]], [[Zaryusu Shasha]], and [[Zenberu Gugu]]. After a quick battle, Cocytus kills all of them with his hands. Because Cocytus emerges victorious from his battle against the lizardman, he is now in charge of the occupation of the lizardman tribes.<ref>''[[Overlord Volume 04]] Chapter 5: The Freezing God''</ref>
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At the same time, Cocytus is hoping to prove his devotion and loyalty to Ainz by obtaining good results where he wins the [[Lizardmen War]] under certain conditions and rules placed as restrictions on him. In other words, his task was to achieve victory using only the forces deployed to the lakeside. Cocytus began his task, casting one of the Message Scrolls and giving his orders to [[Iguva=41]], the commander of the [[Army of Death|undead army]]. He watched how the destruction of his undead forces play out from behind the scene as the [[Lizardmen Alliance]] devastates it in warfare. Cocytus’s opinion of the Lizardmen went up by a notch, and he concluded that they were not a foe which could be instantly destroyed. That being the case, Cocytus figures the only way he could win the war against them was to draw out the battle. Cocytus listens to the suggestions offer by his vassals, borrowing their wisdom in order to dictate what his next course of action will be before then casting another Message Scroll once more to the undead commander.
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Witnessing how his army was almost close to being defeated by the lizardmen, Cocytus used a Message Scroll to call on Demiurge and request his advice. Cocytus was offer several hints and cues by Demiurge on why Ainz gave him such low-tier undead forces to begin with. From his conversation with Demiurge, Cocytus learned that he must divine his master’s intent and adapt his methods to the situation, not follow his master's orders blindly. It was for the first time that Cocytus had started to contemplate his master’s true underlying motives. Cocytus's brief discussion with Demiurge about Ainz's true objectives for him came to an end when Entoma stopped them from discussing any further.
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He deploys his trump card, the undead commander [[Iguva=41]] onto the battlefield to engage the lizardmen in combat. Seeing Iguva=41 being destroyed and his army being defeated by the lizardmen, he realizes that his mission to annihilate the lizardmen has failed. Although he was deeply impressed by the lizardmen's victory during the war, Cocytus is surprised at his defeat and feels ashamed for losing. This leaves him no other choice but to return to Nazarick with a sense of defeat. While walking forward to the [[Throne Room]], he thought to himself what his fate may be and how the last Supreme Being remaining will forsake him, making the former feel ashamed in fear for what is to come next.<ref>''[[Overlord Volume 04]] Chapter 3: Army of Death''</ref> Cocytus apologized for his late arrival to the gathering place and was then introduced to Victim, a fellow Floor Guardian he did not knew of until now. Once Ainz and Albedo arrived, he and the rest of the Floor Guardians were guided by Demiurge to the Throne Room where the two awaits them.
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During the meeting, he prepares to apologize but was stopped by Ainz and Albedo. He was ordered to explain what his feeling are as a commander of a defeated army. As a result, Cocytus described to his master that he is feeling deeply remorseful for his own inability to achieve victory over the lizardmen along with losing Ainz's personal undead creation. Unable to give the proper answer his master wanted, Cocytus was asked once more by Ainz how he felt when commanding the battle and what he learned from it. Hearing this, Cocytus understood what Ainz expected from him, explaining the various ways to his master what he should have done beforehand to defeat the lizardmen. However, Cocytus acknowledge that he did not do any of that mentioned by him as he assumed his forces alone are enough to overwhelm them.
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After carefully analyzing his failure and hearing that his master wants him to wipe out the lizardmen as punishment, he hesitated on following through with that order, refusing the thought of doing so. Hence, Cocytus asks Ainz if they could show mercy to the lizardmen and take them in under Nazarick's rule. He reasons that they can be used to breed future warriors powerful enough to serve Nazarick while instilling to them a strong sense of loyalty. However, since this was not sufficient reasoning to convince his master, Cocytus was assisted by Demiurge who reasoned with Ainz that they can use the lizardman to experiment on Nazarick's rulership. With Demiurge's idea now put forward, Ainz accepted it and allow Cocytus to spare the lizardmen.
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In order to redeem his failure and as punishment, Cocytus was given the order by Ainz to rule over the lizardmen without fear and terror while instilling a deeply-rooted loyalty to Nazarick within them. Cocytus had even receive permission from his master to call on the aid of others which will required considerable resources, manpower, and rations. Once the meeting was over and his master had left, the first thing Cocytus did was express his gratitude to
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Demiurge, admitting that the lizardmen would have been exterminated if not for the demon's intervention. Cocytus was informed by Demiurge that the reason their master approved of his suggestion in the first place was because Ainz himself had foreseen and anticipated such a development happening.<ref>''[[Overlord Volume 04]] Chapter 4: The Dawn of Despair''</ref>
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Later on, he was ordered to first do battle alone against the lizardman heroes. Along the way, he cleaves a path through the forest to find the lizardmen, cutting down several gigantic trees that felled to the ground with earthshaking tremors at its wake. Since his master was watching over him and his battle, he ensures the lizardmen that they will get a chance to shine. Before the battle happens though, he created two pillars of ice ahead of time, warning any lizardman who cross it must be prepared to forfeit their lives when fighting him. Seeing that only [[Shasuryu Shasha]], [[Zaryusu Shasha]], [[Zenberu Gugu]], [[Kyuku Zuzu]], [[Sukyu Juju]] and fifty seven lizardmen have the resolve to fight, Cocytus then gestures these group of lizardmen to begin doing battle with him. Cocytus decided to cull their numbers first by vanquishing the fifty seven lizardmen with his [Frost Aura] skill. When that was done, he starts dealing with the five strongest lizardmen and the two [[Swamp Elemental]]s simultaneously, taking care to slay them one by one until he emerge as the victor of the bout.
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After that quick battle where Cocytus kills all of them with his hands, he returns to Ainz's side and was informed by his master that he cannot rule over the lizardmen through fear. Because Cocytus emerges victorious from his battle against the lizardman, he is now in charge of administering the lizardman tribes and fostering deeply-rooted loyalty to Nazarick. Cocytus was expected by his master to cultivate the growth of talented members of their species. When his master plans to turn the corpses of the lizardmen slain in battle into raw materials, he successfully persuaded Ainz to resurrect the strongest lizardmen back to life rather than go through with that idea. He reasoned that not only do these lizardmen have the warrior spirit to grow even stronger, but it would also allow his master the chance to conduct practical experiments with resurrection magic on them. Cocytus later brought in [[Crusch Lulu]] as representative of the lizardmen to handle talks of negotiations with his master regarding the fate of their species.<ref>''[[Overlord Volume 04]] Chapter 5: The Freezing God''</ref>
   
 
=== The Two Leaders Arc ===
 
=== The Two Leaders Arc ===
 
{{Main|Overlord Volume 08|The Two Leaders Arc}}
 
{{Main|Overlord Volume 08|The Two Leaders Arc}}
Cocytus and the lizardmen head out to subjugate the [[Toadman|Toadmen]] in the northern part of the [[Great Lake]]. Cocytus returns to Nazarick and joins Ainz, Demiurge, and Mare in the [[Spa Resort Nazarick]] before the interruption of the female Floor Guardians, who are attacked by the [[Lion Golem]].<ref>''[[Overlord Volume 08]] Side Story 2: A day of Nazarick''</ref>
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At some point in the past after his war with the lizardmen, Cocytus had a disagreement with the species over their suggestion of returning to their former village to fish. Knowing their reason for that was due to food shortages from not having enough preys to hunt or trap, Cocytus with help from Demiurge, proposed the idea of importing rations from Nazarick and distribute it to them using [[Cauldron of the Daghdha]]. Later on, he began studying methods to ensure a sustainable food supply. The solution he had discovered was the [[Fish Farm Construction|fish farms]] built by Zaryusu. After that, he discussed the matter with Demiurge, and began to build superior fish farms.
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Cocytus left Snowball Earth, 5th Floor to his servants Frost Virgins to defend in his stead while he departs from Nazarick to the Lizardman Village. Once there, it was decided that Cocytus and lizardmen have made it their plan to go on a mission together. According to Shasuryu, Cocytus brought several of his subordinates and several dozen trainee lizardmen on his expedition to subjugate the [[Toadman|Toadmen]] in the northern part of the [[Great Lake]]. After the conquest, he returns back to the Lizardman Village and received a message from Mare that Ainz had invited he and the male Floor Guardians to take a bath with him. Cocytus accepted the invitation and later head over to Nazarick and meet up with his master, Demiurge, and Mare.
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While proceeding to the [[Spa Resort Nazarick]] baths with his master on the 9th Floor, he noticed that there were fewer Eight Edge Assassins around in the tomb. He was informed by Ainz that they're at the [[E-Rantel]] inn with [[Narberal Gamma]]. Hearing this, he shows his concern for the battle maid knowing that she is alone by herself and treated as bait for any enemy to come and attack. Finding it hard to keep his cool emotionally, he asked his master several questions about whether the enemies will take the bait in a way that enabled them to mobilize their forces afterward. He learned that his master had all the intention of making the one responsible for Shalltear suffer as much as the latter did to her.
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In addition, Cocytus informed Ainz his plan to temporarily return to his position of guarding Nazarick since the matters which require his personal presence at the lakeside have all been concluded. Learning that Ainz still have some tasks to do, he found it hard to accept how his master is persistently handling work while NPCs like them are supposed to do it for him. To keep his master at ease, he reassured Ainz that he is the ruler of Nazarick and it was his duty to obey every word he say. At the same time, he feels gloomy knowing his inability and incapability to assist Ainz on his tasks like Demiurge could. Cocytus was consoled by Ainz when the latter comforts him saying that he will one day be on par with Demiurge as long as he continues learning by doing other things like ruling the Lizardman Village.
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While waiting for Demiurge and Mare to arrive in the [[Spa Resort Nazarick]] with them, Cocytus and his master were met by the female Floor Guardians including Albedo in particular who attempted to assault him once more. Cocytus cut his way between Ainz and Albedo, protecting him from her attempt to assault their master. He was shortly later join by Demiurge and Mare who arrived to see their master being troubled by Albedo's action, readying his halberd to do battle with the Overseer if she continues to act that way. Nonetheless, before things escalate even further, the Floor Guardians were reprimanded by Ainz to stop this nonsense and head to their respective men and women's bath.
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While bathing, he expresses his fondness for taking a cold bath while others convey their views on what they like. Cocytus's exoskeleton body was discussed by the Floor Guardians much to the latter's pride and annoyance of thinking he was naked all this time. Due to the interruption of the female Floor Guardians, who are attacked by the [[Lion Golem]], he and his fellow male Floor Guardians were ordered to assist them in stopping the entity. Although Cocytus was initially confused on whether it was a [[Area Guardian]] and why it is in the women's bath, he learned from his master Ainz that that golem's voice is [[Luci★Fer]].<ref>''[[Overlord Volume 08]] Side Story 2: A day of Nazarick''</ref>
   
 
=== The Dark Hero's Story Arc ===
 
=== The Dark Hero's Story Arc ===
 
{{Main|The Dark Hero's Story|The Dark Hero's Story Arc}}
 
{{Main|The Dark Hero's Story|The Dark Hero's Story Arc}}
 
During the Floor Guardians' meeting on figuring out what to ask Ainz as compensation, clothing is brought up. Cocytus says clothes are unnecessary for him, earning him a tease from Aura that he is naked. He later suggests asking Ainz for weapons as he is interested in adding to his collection and also to provide new equipment for the lizardmen under his charge. When Aura wants to have [[Rororo]], Cocytus furiously denies it, stating he will not allow his charges' property to be taken and will even bring the issue before Ainz's attention should Aura escalate it. He, however, considers Aura's request for keeping the hydra's children.<ref>''[[Overlord Volume 06|Overlord Volume 06 Special Drama CD]]: The Dark Hero's Story Arc''</ref>
 
During the Floor Guardians' meeting on figuring out what to ask Ainz as compensation, clothing is brought up. Cocytus says clothes are unnecessary for him, earning him a tease from Aura that he is naked. He later suggests asking Ainz for weapons as he is interested in adding to his collection and also to provide new equipment for the lizardmen under his charge. When Aura wants to have [[Rororo]], Cocytus furiously denies it, stating he will not allow his charges' property to be taken and will even bring the issue before Ainz's attention should Aura escalate it. He, however, considers Aura's request for keeping the hydra's children.<ref>''[[Overlord Volume 06|Overlord Volume 06 Special Drama CD]]: The Dark Hero's Story Arc''</ref>
 
=== The Men in the Kingdom Arc ===
 
{{Main|Overlord Volume 06|The Men in the Kingdom Arc}}
 
Cocytus is present with [[Pandora's Actor|Ainz]] as a witness when they are questioning [[Sebas Tian|Sebas]] about his possible betrayal. After everything has been cleared up, Cocytus is asked for his opinion concerning his decision to allow [[Tuareninya Veyron|Tuare]] to join Nazarick, which he has no objections to.<ref>''[[Overlord Volume 06]] Chapter 6: Introduction of Royal Capital's Disturbance''</ref>
 
   
 
=== Ainz Raises Money Arc ===
 
=== Ainz Raises Money Arc ===
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Later, he presents a [[You Can Be Momon Too Kit|"You Can Be Momon Too" Kit]] to show to his master after purchasing it.<ref>''[[Overlord II Blu-ray 01 Special]]: Ainz Raises Money''</ref>
 
Later, he presents a [[You Can Be Momon Too Kit|"You Can Be Momon Too" Kit]] to show to his master after purchasing it.<ref>''[[Overlord II Blu-ray 01 Special]]: Ainz Raises Money''</ref>
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  +
=== The Men in the Kingdom Arc ===
  +
{{Main|Overlord Volume 05|The Men in the Kingdom I}} ''and'' [[Overlord Volume 06|''The Men in the Kingdom II Arc'']]
  +
Ainz was tasked with preparing the funds for rebuilding and financial aid for the Lizardman Village, in accordance to Cocytus’s wishes.<ref>''[[Overlord Volume 05]] Chapter 2: Blue Roses''</ref>
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  +
Cocytus is present with [[Pandora's Actor|Ainz]] as a witness when they are questioning [[Sebas Tian|Sebas]] about his possible betrayal. Cocytus kept his distance from Sebas, maintaining the ideal range for him as the warrior to launch an attack. He and Demiurge direct their murderous intent at Sebas and [[Tuareninya Veyron|Tuare]] until they were reprimanded by Ainz to stop while their master continues his interrogation on the two. No longer by his master's side, Cocytus shifted his position to stand behind Tuare, awaiting orders. When Ainz orders Sebas to kill Tuare, Cocytus was ordered to interdict the butler's strike beforehand, judging that the attack was intended to be instantly fatal. After verifying Sebas's loyalty, Cocytus is asked for his opinion concerning his decision to allow [[Tuareninya Veyron|Tuare]] to join Nazarick, which he has no objections to.
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  +
When Sebas was given alone time with him and Demiurge, Cocytus told the former that he does not mind the butler addressing it in a formal manner. Seeing Demiurge and Sebas squabble over the fate of Tuare, he tells the two to mindfully keep their act and composure together in the face of their master before them.<ref>''[[Overlord Volume 06]] Chapter 6: Introduction of Royal Capital's Disturbance''</ref>
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=== The Invaders of the Large Tomb Arc ===
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{{Main|Overlord Volume 07|The Invaders of the Large Tomb Arc}}
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Based on the [[Pleiades]]' brief discussion about the intruders, Cocytus appears to be leading the command and overseeing the battle with them. The Pleiades while watching from afar, saw the downfall of the invaders and noted how everything is easily going according to Cocytus's prediction.<ref>''[[Overlord Volume 07]] Chapter 3: The Great Tomb''</ref>
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  +
While so, Cocytus was tasked with evaluating Ainz's performance as a warrior during his master's fight with [[Foresight]].<ref>''[[Overlord Volume 07]] Chapter 4: A Handful of Hope''</ref>
   
 
=== The Magic Caster of Destroy Arc ===
 
=== The Magic Caster of Destroy Arc ===
 
{{Main|Overlord Volume 09|The Magic Caster of Destroy Arc}}
 
{{Main|Overlord Volume 09|The Magic Caster of Destroy Arc}}
Cocytus is present in the Throne Room, where Ainz Ooal Gown welcomes the imperial delegation from the Empire. Later, he and the rest of his fellow Floor Guardians hold a meeting with Ainz, where he discusses his impressions of the Empire and its leader. At the same time, he suggests addressing Ainz Ooal Gown as the Sorcerer King for their newly founded nation.<ref>''[[Overlord Volume 09]] Chapter 1: A War of Words''</ref>
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Cocytus is present in the Throne Room, where Ainz Ooal Gown welcomes the imperial delegation from the Empire. Later, he and the rest of his fellow Floor Guardians hold a meeting with Ainz, where he discusses his impressions of the Baharuth Empire and its Emperor. Like Shalltear, Cocytus thinks Nazarick doesn't necessarily require a just cause to conquer the Empire until Demiurge reasonably explains it to him in details about the extent of their master's plan. Hearing that the Empire is plotting to have them betray each other, Cocytus believes the Emperor does not know what the meaning of loyalty is. When deciding on a ruler-type name suitable for their master, he suggests addressing Ainz Ooal Gown as the Sorcerer King for their newly founded nation.<ref>''[[Overlord Volume 09]] Chapter 1: A War of Words''</ref>
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  +
=== The Ruler of Conspiracy Arc ===
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{{Main|Overlord Volume 10|The Ruler of Conspiracy Arc}}
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Cocytus was ordered by Ainz to send a lizardman over to where [[Hamsuke]] is at so that they can undergo training together.<ref>''[[Overlord Volume 10]] Chapter 1: The Sorcerer Kingdom of Ainz Ooal Gown''</ref>
   
 
=== The Craftsman of Dwarf Arc ===
 
=== The Craftsman of Dwarf Arc ===
 
{{Main|Overlord Volume 11|The Craftsman of Dwarf Arc}}
 
{{Main|Overlord Volume 11|The Craftsman of Dwarf Arc}}
Cocytus greets Ainz when he comes to the Great Lake to talk with Zenberu on the [[Dwarf Kingdom]]. He is clearly outraged when the lizardman is hesitant to answer Ainz's questions, but is held back at the order of his liege. After misunderstandings are cleared up, Ainz informs him of his intentions to go to the Dwarf Kingdom and forge diplomatic relations. Also, Cocytus is willing to offer himself up to his master, so Ainz can sit on his back as a seat, mimicking Shalltear's situation months ago. In a way, his action impress the lizardmen of Ainz's power over him.<ref>''[[Overlord Volume 11]] Chapter 1: Preparing for the Unknown Land''</ref>
+
According to Ainz, Cocytus was not only in charge of the [[Great Lake]] but is now in charge of the [[Great Forest of Tob]], which also made him a project leader of sorts. Entoma informs Ainz that Cocytus wishes to send over a Lizardman as emissary to him with a report concerning the village’s status and seeks his permission to open a Gate which their master permitted. He was told by the lizardman Kyuku Zuzu that Cocytus wishes to present something to his master.
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  +
Cocytus greets and pays his deep respect to Ainz when he comes to the Great Lake to talk with Zenberu on the [[Dwarf Kingdom]]. When Ainz offers a reward to him, Cocytus states that there was no need for one as loyalty to his master is sufficient enough for the Floor Guardian. Not what his master wanted to hear, Cocyus was given a new order to now tell him what he want within a week’s time, limited to material objects, which he obliged to do much to his distress.
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  +
Later, Cocytus presented the lizardman Zenberu to Ainz for questioning as commanded by his master. He appears clearly outraged when Zenberu looks to discern Ainz's intention, seeing that the lizardman was hesitant to answer his master's questions about the [[Dwarf Kingdom]]. Nevertheless, Cocytus's frustration with the lizardman was held back at the order of his liege. Under Ainz's order, from this moment forward, Cocytus was forbidden to harm Zenberu's friends in the village even if the lizardman chooses to oppose his master.
  +
  +
After misunderstandings are cleared up, Ainz informs him of his intentions to go to the Dwarf Kingdom and forge diplomatic relations. Also, Cocytus is willing to offer himself up to his master, so Ainz can sit on his back as a seat, mimicking Shalltear's situation as punishment for having the lizardman act disrespectful towards him. Cocytus asked his master if what he did pleases him or not.
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  +
Hearing his response, Cocytus goes on to state whether his master prefer either him or Shalltear as a fitting chair for Ainz, to which the latter responds that the vampire has done it slightly better than he did. However, Cocytus was not without acknowledgement from his master as Ainz considers his sitting position to have advantages to it, noting the cold, cool sensation he emanate would be best on summer days. He informs Ainz that he plans to practice this sitting position for when he must someday bear his master upon his back. In a way, his action impress the lizardmen of Ainz's power over him.<ref>''[[Overlord Volume 11]] Chapter 1: Preparing for the Unknown Land''</ref>
  +
  +
When Ainz asked for his opinion on whether children of different races can get along well with each other peacefully, Cocytus believes that what he suggested should be possible under his will.
   
Before setting out, Cocytus is wary of the potential dangers and wants to personally escort the Sorcerer King during his journey to the Dwarf Kingdom. However, Ainz convinces him that should Cocytus be in peril or negotiations deteriorate, he will be the first one to be summoned to his side.
+
Before setting out, Cocytus is wary of the potential dangers and wants to personally escort the Sorcerer King during his journey to the Dwarf Kingdom, suggesting his master that he is willing to mobilize his forces at any time. However, Ainz convinces him that should he be in peril or negotiations deteriorate, Cocytus will be called upon to his side on the battlefield if the situation arise.<ref>''[[Overlord Volume 11]] Chapter 2: In Pursuit of the Land of the Dwarves''</ref>
   
 
=== Nazarick Mythology Arc ===
 
=== Nazarick Mythology Arc ===
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=== The Paladin of the Holy Kingdom Arc ===
 
=== The Paladin of the Holy Kingdom Arc ===
 
{{Main|Overlord Volume 13|The Paladin of the Holy Kingdom Arc}}
 
{{Main|Overlord Volume 13|The Paladin of the Holy Kingdom Arc}}
One of the [[Greater Doppelgänger]]s in [[Erich String Orchestra]] tells Ainz about Cocytus requesting that they record their battle with him. This way, Cocytus believes that everyone in the Great Tomb of Nazarick can learn from the battle, which his master permits the group to do.<ref>''[[Overlord Volume 13]] Chapter 5: Ainz Dies''</ref>
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One of the [[Greater Doppelgänger]]s in [[Erich String Orchestra]] tells Ainz about Cocytus requesting that they record their battle with him. This way, Cocytus believes that everyone in the Great Tomb of Nazarick can learn from the battle, which his master permits the group to do.
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  +
While fighting [[Jaldabaoth (Evil Lord)|Jaldabaoth]] and Erich String Orchestra disguised as his demon maids, Ainz recalled the practice he had with Cocytus, the method of evading his opponent by closing in with them several hundred times. Ainz notes how one in every ten times, if Cocytus was not attacking in earnest, he could completely slip past them. He remembers Cocytus saying that a good warrior would never make such incredibly flashy and telegraphed attacks.<ref>''[[Overlord Volume 13]] Chapter 5: Ainz Dies''</ref>
   
 
=== The Witch of the Falling Kingdom Arc ===
 
=== The Witch of the Falling Kingdom Arc ===
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When Demiurge asked if the punishment should be on Philip alone, Cocytus refuses to have it just end there and suggests the same punishment to also be imposed on that nobleman's master.<ref>''[[Overlord Volume 14]] Chapter 1: An Unexpected Move''</ref>
 
When Demiurge asked if the punishment should be on Philip alone, Cocytus refuses to have it just end there and suggests the same punishment to also be imposed on that nobleman's master.<ref>''[[Overlord Volume 14]] Chapter 1: An Unexpected Move''</ref>
   
A month later after the Sorcerer Kingdom's declaration of war against the Re-Estize Kingdom, Cocytus had contributed to the campaign by destroying a city. He has also employ a tactic to successfully conquered several cities without problem using an undead army borrowed from his master. His work was commented by Ainz during a meeting with the Floor Guardians in Nazarick.<ref>''[[Overlord Volume 14]] Chapter 2: The Beginning of the End''</ref>
+
A month later after the Sorcerer Kingdom's declaration of war against the Re-Estize Kingdom, Cocytus had contributed to the campaign by destroying a city. He has also employed a tactic to successfully conquer several cities without problems using an undead army borrowed from his master. His work was commented by Ainz during a meeting with the Floor Guardians in Nazarick.
  +
  +
Upon seeing the death of the [[Death Knight]] and the [[Death Warrior]] by the flying [[Armor of Reinforcement|armor giant]], Cocytus was among those besides Demiurge and Shalltear to discover the reason why Ainz did not sent so many forces into the city of [[E-Naüru]]. This led to his colleague Demiurge praising him and Shalltear for understanding the reason behind why their master made the decision he did by sending in weak forces.<ref>''[[Overlord Volume 14]] Chapter 2: The Beginning of the End''</ref>
  +
  +
Once Ainz arrived at the Re-Estize capital with his 10,000 undead army, it was said that Cocytus happens to be present by his master's side alongside other Floor Guardians like Aura, Mare, and Albedo. When Albedo informs Ainz that they should decline the envoy [[Zanac Valleon Igana Ryle Vaiself|Zanac]]'s request, he disagreed with her suggestion reasoning that it would reflect badly on the people's impression of Ainz by choosing not to confront the human. It was also revealed by Ainz that Cocytus is the one in charge of laying siege to the capital. Since Cocytus will be involved, Ainz has given the Floor Guardian the order to watch out for the [[Razor Edge]] sword later that is currently in the hands of [[Brain Unglaus]].
  +
  +
After Ainz returns from his meeting with Zanac, Cocytus had a discussion with both Aura and Mare about the upcoming siege of the capital. With Cocytus as the leading commander alongside Mare who is second-in-command after him, he and the Floor Guardian were permitted to use the full extent of their abilities. Not only that, but he and the elf are also told by their master to not let any citizen of the Re-Estize Kingdom go unharmed once the battle starts. Once the battle began, Cocytus and his [[Frost Virgin]]s set off from the front he had established in front of the capital. Cocytus was the one in charge of laying the capital under siege and upon raiding it, he was later confronted by the warrior Brain. Accompanied by his Frost Virgins, he introduced himself to Brain while the latter does the same.
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  +
Respecting Brain's resolve and warrior spirit, Cocytus stuck his [[Decapitation Fang]] into the ground and took out his [[God Slaying Emperor Blade]] before assuming a battle stance against him. Cocytus closed the distance between himself and Brain who was now within his range where he then easily ended the warrior's life with one single slash from his weapon. Although the two attacked each other at the same time, Cocytus emerged unscathed from the blow, as Brain's blade did not manage to reach him. After swinging the God Slaying Emperor Blade, Cocytus shook off the blood and fat from the katana and returned it back to his [[Item Box]]. With that one-on-one fight over, Cocytus pulled his halberd out from the ground and examined the body of the warrior Brain he had slain.
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Once he took Brain's [[katana]] weapon and commanded his Frost Virgins to freeze the warrior's corpse, Cocytus resumed his walk to Ro Lente Castle. After reaching and getting inside Ro Lente Castle, he proceeded to stride towards the throne room. Cocytus entered the room and stood by his master's side as he sat upon the throne. While so, Cocytus ordered his Frost Virgins to stand watch outside the throne room and be on the lookout for Climb, instructing them to not harm the human but allow him entry. Due to the success of the operation ending with the [[Fall of the Re-Estize Kingdom]], Cocytus was also among one of the Floor Guardians to have fulfill his role in the mission without problem.<ref>''[[Overlord Volume 14]] Chapter 3: The Last King''</ref>
   
 
== Trivia ==
 
== Trivia ==
 
* The name "Cocytus" is a reference to Dante's [[wikipedia:Inferno (Dante)|Inferno]], in which Cocytus is the ninth and final layer of Hell. It is referred to as a frozen lake that houses all of humanity's traitors.
 
* The name "Cocytus" is a reference to Dante's [[wikipedia:Inferno (Dante)|Inferno]], in which Cocytus is the ninth and final layer of Hell. It is referred to as a frozen lake that houses all of humanity's traitors.
 
* In the [[Overlord Web Novel|Web Novel]], Cocytus is put in charge of the security from the 9th Floor to the 10th Floor. Cocytus commands a troop of armored beetle warriors. Additionally, he is the creation of [[Blue Planet]].
 
* In the [[Overlord Web Novel|Web Novel]], Cocytus is put in charge of the security from the 9th Floor to the 10th Floor. Cocytus commands a troop of armored beetle warriors. Additionally, he is the creation of [[Blue Planet]].
  +
* Cocytus has four mercenary-type NPCs that serve as his vessels, which consist of three insectoids: a mantis, ant, and another fighter-type insect, and a giant brain.
  +
* If not for the battle with the lizardmen, it was believed by Cocytus that he would have without question, accepted the order of wiping away his shame and that of Nazarick with slaughter.
   
 
== Quotes ==
 
== Quotes ==
*(To [[Momonga]]): ''"More powerful and stronger than any Guardians. Supreme ruler of the Great Tomb of Nazarick."''
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*(To [[Shalltear Bloodfallen|Shalltear]] and [[Aura Bella Fiora|Aura]]): ''"You. Stand. Before. A. Supreme. Being. Contain. Yourself."''
*(To [[Aura Bella Fiora|Aura]]): ''"A sword does not think, swung to the will of its master, it only cuts."''
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*(To [[Demiurge]] about Ainz's future heir): ''"...Oh. How. Wonderful. What. A Glorious. Sight... Uncle... Uncle..."''
*(To the Lizardmen): ''"This might be rude for the warriors who came with the resolve to die, but know this, only death awaits all who cross beyond these ice pillars."''
+
*(To Demiurge): ''"Ah. What. A. Beautiful. Sight... Truly. it. Was. Everything. I. Have. Ever. Dreamed. Of."''
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*(To Demiurge): ''"...Demiurge. You. Dare. Ask. Albedo. To. Resign. The. Position. Of. Guardian. Overseer. Which. The. Supreme. Beings. Gave. Her? This. Is. Treachery!"''
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*(To [[Albedo]] and Demiurge): ''"I. Mentioned. It. Before. But. The. Entire. Fight. Has. Gone. As. Ainz-sama. Planned. I. Am. In, Awe. Of. His. Prowess."''
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*(To Albedo and Demiurge): ''"...His. Extraordinary Ability. As. A. Magic. Caster... No. As. A. Combatant. Is. Truly. An. Inspiration."''
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*(To Demiurge): ''"I. Hope. You. Can. Help. Me. Think. Of. Something. If. This. Carries. On. We. Will. Be. Defeated. I. Can. Accept. A. Personal. Defeat. But. I. Cannot. Allow. The. Great. Tomb. Of. Nazarick. — The. Supreme. Beings. — To. Be. Disgraced. In. Such. A. Way."''
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*(To himself): ''"They. Will. Never. Forgive. Me. If. Things. Get. That. Bad. Not. Even. My. Life. Will. Be. Enough. To. Atone."''
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*(To himself): ''"If. The. Master. Is. Disappointed. And. Leaves. Like. The. Other. Supreme. Beings. What. Should. I. Do..."''
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*(To himself): ''"No. That. Cannot. Be. Ainz-sama. Would. Never... Abandon. Us."''
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*(To himself): ''"How. Could. Such. A. Merciful. Master. Abandon. Us?"''
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*(To [[Ainz Ooal Gown|Ainz]]): ''"I. Am. Deeply. Remorseful. For. My. Inability. To. Achieve. Victory. Even. After. Receiving. Command. Of. My. Own. Troops. And. For. The. Loss. Of. The. Elder. Lich. Commander. That. You. Personally. Made. Ainz-sama."''
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*(To Ainz): ''"I. Underestimated. The. Lizardmen. I. Should. Have. Been. More. Careful."''
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*(To Ainz): ''"Yes. I. Did. Not. Have. Enough. Information. From. This. Battle. I. Learned. That. My. Chances. Of. Victory. Would. Be. Slim. If. I. Did. Not. Know. The. Enemy’s. Strength. And. The. Terrain."''
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*(To Ainz about the [[Lizardmen Alliance|Lizardmen]]): ''"Yes! In. The. Future. They. Might. Breed. Mighty. Warriors. Therefore. It. Would. Be. A Shame. To. Wipe. Them. All. Out. Right. Now. Your. Servant. Submits. That. It. Would. Be. Better. To. Instill. A. Strong. Sense. Of. Loyalty. Among. Them. So. That. When. Stronger. Lizardmen. Appear. We. Can. Take. Them. As. Minions."''
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*(To the Lizardmen): ''"This. Might. Be. Rude. To. Warriors. Who. Are. Ready. To. Give. Their. Lives. But. I. Must. Inform. You. That. My. Side. Of. These. Pillars. Will. Be. Your. Grave. Any. Who. Cross. It. Shall. Die."''
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*(To Albedo): ''"The. Opponent. Desires. To. Have. A. Battle. Of. Wits. With. Ainz. Sama, If. We. Rejected. Him. Outright. It. Would. Reflect. Negatively. On. The. People's. Impression. Of. Ainz. Sama's. Magnanimity."''
   
 
== References ==
 
== References ==

Latest revision as of 18:21, June 6, 2020

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"Fifth Floor Guardian Cocytus, at your command."
— Cocytus' Introduction

Cocytus (コキュートス) is a Floor Guardian of the 5th Floor in the Great Tomb of Nazarick. He is the creation of Warrior Takemikazuchi.

Appearance Edit

Having an enormous body size of 2.5 meters, Cocytus has the appearance of an insect walking on two feet - a fusion between a mantis and an ant. With a tail twice as long as his height, Cocytus is covered in sharp spikes like icicles and has a strong jaw that can easily snap people's hands.

Two of his hands hold a silver halberd, while the remaining two hands hold a mace emitting black light and a crooked shape sheath which seems to be for a broadsword. With a breathtaking cold air, the pale blue, hardened bone armor oozes out diamond dust like bright light. His shoulders and back look like uplifted icebergs.

Personality Edit

Cocytus has a warrior personality, respecting anyone with a fighting spirit, and the heart of a warrior. As a Floor Guardian, he is in charge of Nazarick's martial defense. Cocytus is loyal to a fault that he even allows his master to fight the rebel Shalltear alone as the former was ordered to do. This is shown when he prevented Demiurge, under Ainz's order, from interfering in Ainz's fight against Shalltear, even though he too also feared the possibility of losing his master. As Cocytus is a warrior by heart, he likes a good battle and has a sense of honor. He is not above the thought of condescending his opponents, but rather show admiration of their tenacity to fight. Unlike his isolationist and xenophobic colleagues, he is more accepting and open to the idea of allowing outsiders like the lizardmen to join Nazarick. He also appears to enjoy watching how battles play out as a bystander, excited to see what tactics and strategies his enemy use.

Though Cocytus takes pride in his position as Nazarick's defender, he is somewhat envious of his fellow Floor Guardians. Cocytus likens himself as the 'sword' of Ainz Ooal Gown, that executes his master's wishes. He thinks the only way he could prove his worth to Ainz is by actually defeating the invading forces that would pose a threat to Nazarick. Cocytus is not fond of asking for assistance in order to save face, but when the need arises, he will put his pride aside to accomplish his task. For that reason, he was willing to accept a personal defeat but not one that will disgrace and humiliate the Great Tomb of Nazarick and the 41 Supreme Beings. After losing his army to the lizardmen, he starts to reflect more on his actions and no longer wishing to obey his master's order blindly without first offering his own input on it. With the task of now administering the Lizardman Village, he has also began to shoulder more responsibilities that were expected him to carry out by his master.

Knowing his defeat, Cocytus doesn't mind if his master reprimands him. He was tolerant about it to the point that he had already prepared himself to be slain if given the order to do so. In other words, Cocytus was ready to commit suicide in order to erase the stain of his dishonor for losing to the enemy. What Cocytus felt most afraid of is the notion that he could possibly disappoint his master and be abandoned because of it. He was sensitive of his failure having an affect on the rest of his fellow NPCs that his death alone will not be enough to atone. Cocytus failing his first campaign put a mental toll on his state of mind where he tried his best to console himself from seeing such a scenario happen. When seeing Ainz go out of his way to do tasks still, Cocytus can't help but sometime also feel sadly inadequate and incompetent as he himself couldn't be able to fulfill the work in his master's stead. He is also a person who is diligent with whatever task was given to him such as training either alone, with Ainz or with the lizardmen in swordsmanship.

Ever since the end of the Lizardmen War, he became like a teacher-like figure to the lizardmen, strictly teaching them to abide by the rules of Nazarick and how they respectfully act around Ainz. This led Cocytus to becoming a more outspoken person about the decisions he need to wisely and carefully choose as Ainz wishes him to think of ways in bettering Nazarick. As a result, he starts to develop confidence and trust in his judgement of what to do rationally during wars. Cocytus yearns for Ainz to produce a heir for Nazarick, to which he could look after and train under him. He was willing to train either Ainz or his future child about direct combat physically and how to approach these kind of foes. Based on his conversation with Shalltear, he fondly enjoys the idea of honing and crossing blades with his master in the ways of swordsmanship if permitted the chance to duel him. He takes thrill in dueling worthy warriors who caught his attention, looking to challenge their resolve head on and even possibly, recruit them if a chance presents itself.

Background Edit

Cocytus was created by Warrior Takemikazuchi as the Floor Guardian of the 5th Floor of the Great Tomb of Nazarick. In his setting, he was programmed to possess every sort of knowledge on all of the 41 Supreme Beings' Divine Weapons. Nonetheless, Cocytus admits that he had never once seen such weapons and its powers utilized in battle before until his master Ainz Ooal Gown equipped it in combat against Shalltear Bloodfallen. Like his creator, he also sees himself as a prideful warrior who admires the fighting spirit of his foes, giving them the honor and respect they deserve when faced against the former in combat.

Whenever he emerge triumphantly against his adversary in combat, Cocytus tends to lay claim of ownership over the weapon used by them, adding it to his own collection of weapons regardless of its value. Furthermore, Cocytus would even considered keeping the corpse of the warrior he slain as trophies for safekeeping, making sure to have them kept well-preserve and intact via ice to bring back home with him. No matter how strong or weak the warrior is to him, Cocytus approach them without showing any bias or arrogance all so that the former seeks to have a proper match where they can fight to the death.

Chronology Edit

The Undead King Arc Edit

Main article: The Undead King Arc

When Momonga calls for the Floor Guardians to the 6th Floor, Cocytus is the second to arrive after Shalltear. During his arrival at the Amphitheater, he stops the argument between Aura and Shalltear in front of their master. As there were no intruders on the 5th Floor of Nazarick, Cocytus briefly discusses with Ainz about his free time there where he had been training in order to be ready for deployment at any time. Hearing Ainz's praise of his hard-work, Cocytus appreciates his master's kind words and felt that the task was no longer tiring for him to do. The brief discussion between the two ends when Cocytus informs his master that the last two of the Floor Guardians, Albedo and Demiurge have arrived.

Once all of the Floor Guardians have arrived to their meeting place, Cocytus pays his respects with the rest of them to Momonga, describing the greatness of their master.[1] Right after Momonga left, Cocytus and his fellow Floor Guardians shared what their impression was towards Ainz after feeling the power of his Despair Aura emanated by his master. Along the way, Cocytus conduct talks with Demiurge and Mare about the future of Nazarick.

At first, he thought it was disrespectful of them to consider Momonga's successor when they are supposed to serve their master faithfully as they were created for this purpose. However, Cocytus's thoughts change the moment Demiurge reasoned with him that they should also consider pledging their loyalty to Momonga's future heir as well much to his interest. He began daydreaming of a possible scenario where Momonga had an heir and that it started calling him its Uncle. He was happily imagining himself as a cool old uncle, loyally serving Momonga’s heir until Demiurge brought him back to reality. According to Cocytus, it was everything he have ever dreamed of happening.[2]

After he and the rest of the Floor Guardians were dismissed by the Overseer to carry out their respective duties, it was said that he was tasked with supervising Nazarick's perimeter security.[3]

The Emissary of the King Arc Edit

Main article: The Emissary of the King Arc

Cocytus is paid a visit by Ainz's Death Knight on his floor. The Floor Guardian shows his guest hospitality, even shaking the undead's hand as they serve the same master. After the undead asks questions on who Cocytus is the friendliest with in Nazarick, he expresses that it would be Demiurge, Kyouhukou, Grant, and Gashokukochuuou. He states that there is no creation of the 41 Supreme Beings whom he do not get along, having only speak to them but not met them in person. For that reason, he wanted Ainz's permission to arrange some time in visiting them and deepen their friendship. As for his other desires, it would be to spar with Sebas Tian, Albedo, and even Ainz if permitted. Another wish is that as a loyal warrior, Cocytus wants Ainz to have an heir who he can look after and protect so that the future of the Guardians will be secure. At the same time, he wants the chance to train said heir on how to deal with any enemies such as melee attackers that may try to harm it while under his protection. Without one, he fears that Nazarick denizens will result to infighting disputes within the tomb emotionally and ideologically.[4]

The Guardians' Vacation Arc Edit

Main article: The Guardians' Vacation Arc

When Ainz suggested giving the Guardians vacation off from their work time, Cocytus tells his master he is doing fine and not overexerting himself much to his master's insistence. Cocytus informs Ainz that he cannot grow any larger than his current form, telling him that he had already completed his life cycle. He recommends his master to let him use items as a substitute for sleep. In the end, he gave in to Ainz's order and decided to take a break and rest.

During a private meeting with the Guardians, he allows Sebas entry into their conference room under the pass code: All Glory in this World Belongs to Nazarick. Cocytus acknowledges that Demiurge's prediction was spot on about Ainz continuing to work while they on the other hand, are resting. Seeing the results of Ainz's earlier health examination by Sebas, he thinks it is not a good sign for their master. He believes the color of the health exam represents some some sort of meaning like "So black-hearted I'm going to die" that are unclear to him much to his confusion. Cocytus presumes that it means Ainz is under the influence of an unknown World Item's effect.

Cocytus reassures everyone that what they do for Ainz should not be taken as disloyalty as long as they are having this discussion for the sake of their master. He admits to not being able to pick up on Ainz's hidden meaning of why their master decided to give them break time, respecting Demiurge's keen insight on how that may have been the case for them.[5]

The Bloody Valkyrie Arc Edit

Main article: The Bloody Valkyrie Arc

Cocytus is ordered to restrain Demiurge from interfering with the fight between Ainz and Shalltear. As a result, when Demiuge attempted to go and assist his master, Cocytus quickly block the Floor Guardian from leaving by brandishing his weapon in front of it.

While so, he engaged in conversations with Albedo and Demiurge about Ainz's decision to fight the vampire alone. Cocytus found his master's strategy when dealing with Shalltear to be strange much to his confusion. He reasoned with Albedo that a sequential attack would be safer to do where they could attack in waves and wear down Shalltear’s HP and MP which Ainz would have done rationally. His reasoning was met with acceptance by Demiurge as he and the demon both agreed that their master was lying to them in order to hide something.

Nonetheless, Cocytus and Demiurge were told by Albedo that Ainz is a different person than he was before Shalltear's betrayal which was why the two are advised to have faith in their master. To inform the two about Ainz's chance of defeating Shalltear, he states that it was seven to three.

When Demiurge threaten Albedo to step down as the Guardian Overseer in the event that Ainz loses the battle with Shalltear, he was angered by his colleague's words. He calls Demiurge's suggestion as treacherous since that position was given to Albedo by the 41 Supreme Beings.[6]

As he watch how the fight between Ainz and Shalltear play out, Cocytus can't help but voice his astonishment, amazement, and excitement at seeing his master freely used the equipment and items formerly used by the Supreme Beings respectively. Although Cocytus was confident more than ever that Ainz could win the battle against Shalltear, Demiurge thinks otherwise due to his lack of warrior knowledge. Cocytus enlightens him about Shalltear abandoning her defense for an all-out attack is what he would have also done if he was in the same situation as her. Although Demiurge felt impressed by his explanation, Cocytus don't think so highly of his knowledge as he only know the weapons' effects and names.

With the battle almost reaching its conclusion, Cocytus acknowledged and admired how the entire fight from start to end has gone all according to Ainz's plan. After Ainz emerges victorious from his battle, he and the other Floor Guardians beg him to never do such a thing again, and to allow them to handle any future incidents that may come from here on out. Once Shalltear was revived, he advised his Ainz to teach the vampire a stern lesson for messing up on not only her mission but for betraying their master and Nazarick as well.[7]

The Show Must Go On! Edit

Main article: The Show Must Go On! Arc

Cocytus is among the judges of the auditions in selecting the person who will play Juliet. He is in disbelief that Demiurge supports the idea for a competition between the two Floor Guardians, Albedo and Shalltear. Later on, he is seen training on the 5th Floor and is approached by Shalltear. Cocytus, knowing something suspicious is up, attempts to rebuff her. His suspicion is proven when she tries to bribe him to vote for her in the auditions. However, when she offers the role of Tybalt to him, for a chance to exchange blades with Ainz, he is tempted by the idea. Cocytus, however, being an honorable warrior, refuses and tells her to leave. During the audition, Cocytus is moved by Albedo's performance, which results in him voting for her.[8]

The Sealed Evil Tree Arc Edit

Main article: The Sealed Evil Tree Arc

Cocytus is summoned to the center of the Tob Forest to fight against Zy'tl Q'ae. He is ordered to fight as a team with the Floor Guardians. However, he keeps forgetting and had attack the treant twice with overwhelming force until being reprimanded by Albedo to reevaluate their master's order.[9]

The Lizard Man Heroes Arc Edit

Main article: The Lizard Man Heroes Arc

Cocytus is ordered by Ainz to annihilate the lizardmen and commands the undead army of Nazarick. During the war council, he instructed his vassals to tidy up their table so that Entoma can prepare a spot for the set of Message Scrolls and Teleportation Scrolls to be placed on. Once Cocytus received the scrolls, he was inform by the insect maid that they were made with the skin that Demiurge worked hard to obtain. He was suggested to contact Ainz for feedback if any problems arise regarding their use. Nonetheless, he was bitter to see Demiurge has pulled even further ahead of him after aiding his master with the making of these scrolls.

At the same time, Cocytus is hoping to prove his devotion and loyalty to Ainz by obtaining good results where he wins the Lizardmen War under certain conditions and rules placed as restrictions on him. In other words, his task was to achieve victory using only the forces deployed to the lakeside. Cocytus began his task, casting one of the Message Scrolls and giving his orders to Iguva=41, the commander of the undead army. He watched how the destruction of his undead forces play out from behind the scene as the Lizardmen Alliance devastates it in warfare. Cocytus’s opinion of the Lizardmen went up by a notch, and he concluded that they were not a foe which could be instantly destroyed. That being the case, Cocytus figures the only way he could win the war against them was to draw out the battle. Cocytus listens to the suggestions offer by his vassals, borrowing their wisdom in order to dictate what his next course of action will be before then casting another Message Scroll once more to the undead commander.

Witnessing how his army was almost close to being defeated by the lizardmen, Cocytus used a Message Scroll to call on Demiurge and request his advice. Cocytus was offer several hints and cues by Demiurge on why Ainz gave him such low-tier undead forces to begin with. From his conversation with Demiurge, Cocytus learned that he must divine his master’s intent and adapt his methods to the situation, not follow his master's orders blindly. It was for the first time that Cocytus had started to contemplate his master’s true underlying motives. Cocytus's brief discussion with Demiurge about Ainz's true objectives for him came to an end when Entoma stopped them from discussing any further.

He deploys his trump card, the undead commander Iguva=41 onto the battlefield to engage the lizardmen in combat. Seeing Iguva=41 being destroyed and his army being defeated by the lizardmen, he realizes that his mission to annihilate the lizardmen has failed. Although he was deeply impressed by the lizardmen's victory during the war, Cocytus is surprised at his defeat and feels ashamed for losing. This leaves him no other choice but to return to Nazarick with a sense of defeat. While walking forward to the Throne Room, he thought to himself what his fate may be and how the last Supreme Being remaining will forsake him, making the former feel ashamed in fear for what is to come next.[10] Cocytus apologized for his late arrival to the gathering place and was then introduced to Victim, a fellow Floor Guardian he did not knew of until now. Once Ainz and Albedo arrived, he and the rest of the Floor Guardians were guided by Demiurge to the Throne Room where the two awaits them.

During the meeting, he prepares to apologize but was stopped by Ainz and Albedo. He was ordered to explain what his feeling are as a commander of a defeated army. As a result, Cocytus described to his master that he is feeling deeply remorseful for his own inability to achieve victory over the lizardmen along with losing Ainz's personal undead creation. Unable to give the proper answer his master wanted, Cocytus was asked once more by Ainz how he felt when commanding the battle and what he learned from it. Hearing this, Cocytus understood what Ainz expected from him, explaining the various ways to his master what he should have done beforehand to defeat the lizardmen. However, Cocytus acknowledge that he did not do any of that mentioned by him as he assumed his forces alone are enough to overwhelm them.

After carefully analyzing his failure and hearing that his master wants him to wipe out the lizardmen as punishment, he hesitated on following through with that order, refusing the thought of doing so. Hence, Cocytus asks Ainz if they could show mercy to the lizardmen and take them in under Nazarick's rule. He reasons that they can be used to breed future warriors powerful enough to serve Nazarick while instilling to them a strong sense of loyalty. However, since this was not sufficient reasoning to convince his master, Cocytus was assisted by Demiurge who reasoned with Ainz that they can use the lizardman to experiment on Nazarick's rulership. With Demiurge's idea now put forward, Ainz accepted it and allow Cocytus to spare the lizardmen.

In order to redeem his failure and as punishment, Cocytus was given the order by Ainz to rule over the lizardmen without fear and terror while instilling a deeply-rooted loyalty to Nazarick within them. Cocytus had even receive permission from his master to call on the aid of others which will required considerable resources, manpower, and rations. Once the meeting was over and his master had left, the first thing Cocytus did was express his gratitude to Demiurge, admitting that the lizardmen would have been exterminated if not for the demon's intervention. Cocytus was informed by Demiurge that the reason their master approved of his suggestion in the first place was because Ainz himself had foreseen and anticipated such a development happening.[11]

Later on, he was ordered to first do battle alone against the lizardman heroes. Along the way, he cleaves a path through the forest to find the lizardmen, cutting down several gigantic trees that felled to the ground with earthshaking tremors at its wake. Since his master was watching over him and his battle, he ensures the lizardmen that they will get a chance to shine. Before the battle happens though, he created two pillars of ice ahead of time, warning any lizardman who cross it must be prepared to forfeit their lives when fighting him. Seeing that only Shasuryu Shasha, Zaryusu Shasha, Zenberu Gugu, Kyuku Zuzu, Sukyu Juju and fifty seven lizardmen have the resolve to fight, Cocytus then gestures these group of lizardmen to begin doing battle with him. Cocytus decided to cull their numbers first by vanquishing the fifty seven lizardmen with his [Frost Aura] skill. When that was done, he starts dealing with the five strongest lizardmen and the two Swamp Elementals simultaneously, taking care to slay them one by one until he emerge as the victor of the bout.

After that quick battle where Cocytus kills all of them with his hands, he returns to Ainz's side and was informed by his master that he cannot rule over the lizardmen through fear. Because Cocytus emerges victorious from his battle against the lizardman, he is now in charge of administering the lizardman tribes and fostering deeply-rooted loyalty to Nazarick. Cocytus was expected by his master to cultivate the growth of talented members of their species. When his master plans to turn the corpses of the lizardmen slain in battle into raw materials, he successfully persuaded Ainz to resurrect the strongest lizardmen back to life rather than go through with that idea. He reasoned that not only do these lizardmen have the warrior spirit to grow even stronger, but it would also allow his master the chance to conduct practical experiments with resurrection magic on them. Cocytus later brought in Crusch Lulu as representative of the lizardmen to handle talks of negotiations with his master regarding the fate of their species.[12]

The Two Leaders Arc Edit

Main article: The Two Leaders Arc

At some point in the past after his war with the lizardmen, Cocytus had a disagreement with the species over their suggestion of returning to their former village to fish. Knowing their reason for that was due to food shortages from not having enough preys to hunt or trap, Cocytus with help from Demiurge, proposed the idea of importing rations from Nazarick and distribute it to them using Cauldron of the Daghdha. Later on, he began studying methods to ensure a sustainable food supply. The solution he had discovered was the fish farms built by Zaryusu. After that, he discussed the matter with Demiurge, and began to build superior fish farms.

Cocytus left Snowball Earth, 5th Floor to his servants Frost Virgins to defend in his stead while he departs from Nazarick to the Lizardman Village. Once there, it was decided that Cocytus and lizardmen have made it their plan to go on a mission together. According to Shasuryu, Cocytus brought several of his subordinates and several dozen trainee lizardmen on his expedition to subjugate the Toadmen in the northern part of the Great Lake. After the conquest, he returns back to the Lizardman Village and received a message from Mare that Ainz had invited he and the male Floor Guardians to take a bath with him. Cocytus accepted the invitation and later head over to Nazarick and meet up with his master, Demiurge, and Mare.

While proceeding to the Spa Resort Nazarick baths with his master on the 9th Floor, he noticed that there were fewer Eight Edge Assassins around in the tomb. He was informed by Ainz that they're at the E-Rantel inn with Narberal Gamma. Hearing this, he shows his concern for the battle maid knowing that she is alone by herself and treated as bait for any enemy to come and attack. Finding it hard to keep his cool emotionally, he asked his master several questions about whether the enemies will take the bait in a way that enabled them to mobilize their forces afterward. He learned that his master had all the intention of making the one responsible for Shalltear suffer as much as the latter did to her.

In addition, Cocytus informed Ainz his plan to temporarily return to his position of guarding Nazarick since the matters which require his personal presence at the lakeside have all been concluded. Learning that Ainz still have some tasks to do, he found it hard to accept how his master is persistently handling work while NPCs like them are supposed to do it for him. To keep his master at ease, he reassured Ainz that he is the ruler of Nazarick and it was his duty to obey every word he say. At the same time, he feels gloomy knowing his inability and incapability to assist Ainz on his tasks like Demiurge could. Cocytus was consoled by Ainz when the latter comforts him saying that he will one day be on par with Demiurge as long as he continues learning by doing other things like ruling the Lizardman Village.

While waiting for Demiurge and Mare to arrive in the Spa Resort Nazarick with them, Cocytus and his master were met by the female Floor Guardians including Albedo in particular who attempted to assault him once more. Cocytus cut his way between Ainz and Albedo, protecting him from her attempt to assault their master. He was shortly later join by Demiurge and Mare who arrived to see their master being troubled by Albedo's action, readying his halberd to do battle with the Overseer if she continues to act that way. Nonetheless, before things escalate even further, the Floor Guardians were reprimanded by Ainz to stop this nonsense and head to their respective men and women's bath.

While bathing, he expresses his fondness for taking a cold bath while others convey their views on what they like. Cocytus's exoskeleton body was discussed by the Floor Guardians much to the latter's pride and annoyance of thinking he was naked all this time. Due to the interruption of the female Floor Guardians, who are attacked by the Lion Golem, he and his fellow male Floor Guardians were ordered to assist them in stopping the entity. Although Cocytus was initially confused on whether it was a Area Guardian and why it is in the women's bath, he learned from his master Ainz that that golem's voice is Luci★Fer.[13]

The Dark Hero's Story Arc Edit

Main article: The Dark Hero's Story Arc

During the Floor Guardians' meeting on figuring out what to ask Ainz as compensation, clothing is brought up. Cocytus says clothes are unnecessary for him, earning him a tease from Aura that he is naked. He later suggests asking Ainz for weapons as he is interested in adding to his collection and also to provide new equipment for the lizardmen under his charge. When Aura wants to have Rororo, Cocytus furiously denies it, stating he will not allow his charges' property to be taken and will even bring the issue before Ainz's attention should Aura escalate it. He, however, considers Aura's request for keeping the hydra's children.[14]

Ainz Raises Money Arc Edit

Main article: Ainz Raises Money Arc

Cocytus is present with his fellow Floor Guardians at a meeting with their master Ainz Ooal Gown. During the meeting, it’s revealed that he has requested a voucher to fight with Ainz as his reward. In addition, he formally requests as the Overseer of the lizardman to prevent the seizure of Rororo by Aura, which Ainz deems reasonable.

Like the others, he is given three gold coins to be used as his salary by Ainz. In the next meeting, he tells his liege how he made the lizardman convert the gold coins into tribal jewelry.

Ainz, disappointed that his subordinates refuse to part with the money, gives them orders them to spend. Finding little interest in the goods offered in E-Rantel, the Floor Guardians seek advice from Sebas Tian and Narberal Gamma. Noticing the fan goods of Blue Rose, it prompts the Guardians to use the gold to create their own brand of fan goods based on Momon the Dark Hero.

Later, he presents a "You Can Be Momon Too" Kit to show to his master after purchasing it.[15]

The Men in the Kingdom Arc Edit

Main article: The Men in the Kingdom I and The Men in the Kingdom II Arc

Ainz was tasked with preparing the funds for rebuilding and financial aid for the Lizardman Village, in accordance to Cocytus’s wishes.[16]

Cocytus is present with Ainz as a witness when they are questioning Sebas about his possible betrayal. Cocytus kept his distance from Sebas, maintaining the ideal range for him as the warrior to launch an attack. He and Demiurge direct their murderous intent at Sebas and Tuare until they were reprimanded by Ainz to stop while their master continues his interrogation on the two. No longer by his master's side, Cocytus shifted his position to stand behind Tuare, awaiting orders. When Ainz orders Sebas to kill Tuare, Cocytus was ordered to interdict the butler's strike beforehand, judging that the attack was intended to be instantly fatal. After verifying Sebas's loyalty, Cocytus is asked for his opinion concerning his decision to allow Tuare to join Nazarick, which he has no objections to.

When Sebas was given alone time with him and Demiurge, Cocytus told the former that he does not mind the butler addressing it in a formal manner. Seeing Demiurge and Sebas squabble over the fate of Tuare, he tells the two to mindfully keep their act and composure together in the face of their master before them.[17]

The Invaders of the Large Tomb Arc Edit

Main article: The Invaders of the Large Tomb Arc

Based on the Pleiades' brief discussion about the intruders, Cocytus appears to be leading the command and overseeing the battle with them. The Pleiades while watching from afar, saw the downfall of the invaders and noted how everything is easily going according to Cocytus's prediction.[18]

While so, Cocytus was tasked with evaluating Ainz's performance as a warrior during his master's fight with Foresight.[19]

The Magic Caster of Destroy Arc Edit

Main article: The Magic Caster of Destroy Arc

Cocytus is present in the Throne Room, where Ainz Ooal Gown welcomes the imperial delegation from the Empire. Later, he and the rest of his fellow Floor Guardians hold a meeting with Ainz, where he discusses his impressions of the Baharuth Empire and its Emperor. Like Shalltear, Cocytus thinks Nazarick doesn't necessarily require a just cause to conquer the Empire until Demiurge reasonably explains it to him in details about the extent of their master's plan. Hearing that the Empire is plotting to have them betray each other, Cocytus believes the Emperor does not know what the meaning of loyalty is. When deciding on a ruler-type name suitable for their master, he suggests addressing Ainz Ooal Gown as the Sorcerer King for their newly founded nation.[20]

The Ruler of Conspiracy Arc Edit

Main article: The Ruler of Conspiracy Arc

Cocytus was ordered by Ainz to send a lizardman over to where Hamsuke is at so that they can undergo training together.[21]

The Craftsman of Dwarf Arc Edit

Main article: The Craftsman of Dwarf Arc

According to Ainz, Cocytus was not only in charge of the Great Lake but is now in charge of the Great Forest of Tob, which also made him a project leader of sorts. Entoma informs Ainz that Cocytus wishes to send over a Lizardman as emissary to him with a report concerning the village’s status and seeks his permission to open a Gate which their master permitted. He was told by the lizardman Kyuku Zuzu that Cocytus wishes to present something to his master.

Cocytus greets and pays his deep respect to Ainz when he comes to the Great Lake to talk with Zenberu on the Dwarf Kingdom. When Ainz offers a reward to him, Cocytus states that there was no need for one as loyalty to his master is sufficient enough for the Floor Guardian. Not what his master wanted to hear, Cocyus was given a new order to now tell him what he want within a week’s time, limited to material objects, which he obliged to do much to his distress.

Later, Cocytus presented the lizardman Zenberu to Ainz for questioning as commanded by his master. He appears clearly outraged when Zenberu looks to discern Ainz's intention, seeing that the lizardman was hesitant to answer his master's questions about the Dwarf Kingdom. Nevertheless, Cocytus's frustration with the lizardman was held back at the order of his liege. Under Ainz's order, from this moment forward, Cocytus was forbidden to harm Zenberu's friends in the village even if the lizardman chooses to oppose his master.

After misunderstandings are cleared up, Ainz informs him of his intentions to go to the Dwarf Kingdom and forge diplomatic relations. Also, Cocytus is willing to offer himself up to his master, so Ainz can sit on his back as a seat, mimicking Shalltear's situation as punishment for having the lizardman act disrespectful towards him. Cocytus asked his master if what he did pleases him or not.

Hearing his response, Cocytus goes on to state whether his master prefer either him or Shalltear as a fitting chair for Ainz, to which the latter responds that the vampire has done it slightly better than he did. However, Cocytus was not without acknowledgement from his master as Ainz considers his sitting position to have advantages to it, noting the cold, cool sensation he emanate would be best on summer days. He informs Ainz that he plans to practice this sitting position for when he must someday bear his master upon his back. In a way, his action impress the lizardmen of Ainz's power over him.[22]

When Ainz asked for his opinion on whether children of different races can get along well with each other peacefully, Cocytus believes that what he suggested should be possible under his will.

Before setting out, Cocytus is wary of the potential dangers and wants to personally escort the Sorcerer King during his journey to the Dwarf Kingdom, suggesting his master that he is willing to mobilize his forces at any time. However, Ainz convinces him that should he be in peril or negotiations deteriorate, Cocytus will be called upon to his side on the battlefield if the situation arise.[23]

Nazarick Mythology Arc Edit

Main article: Nazarick Mythology Arc

Cocytus attends a meeting to create a mythology of his master in order to solidify his hold over the masses. In his myth story, he uses the tone of a classic Japanese children folk tale. Taking place in a small town, a boy witnesses the destruction of all he holds dear at the hands of monsters. The boy defeats the monsters using a mysterious power, becoming a hero to the people. A sorcerer named Ainz Ooal Gown appears before the boy, claiming to be his father and has been using him to lead the foolish humans in order to stabilize the peace. Seeing his work complete, he disappears, but promises to return to guide the humans once again. The Guardians then comment that Cocytus' story will be popular among children and adventurers.[24]

The Paladin of the Holy Kingdom Arc Edit

Main article: The Paladin of the Holy Kingdom Arc

One of the Greater Doppelgängers in Erich String Orchestra tells Ainz about Cocytus requesting that they record their battle with him. This way, Cocytus believes that everyone in the Great Tomb of Nazarick can learn from the battle, which his master permits the group to do.

While fighting Jaldabaoth and Erich String Orchestra disguised as his demon maids, Ainz recalled the practice he had with Cocytus, the method of evading his opponent by closing in with them several hundred times. Ainz notes how one in every ten times, if Cocytus was not attacking in earnest, he could completely slip past them. He remembers Cocytus saying that a good warrior would never make such incredibly flashy and telegraphed attacks.[25]

The Witch of the Falling Kingdom Arc Edit

Main article: The Witch of the Falling Kingdom Arc

In the Audience Room, with permission from the Floor Guardian Overseer, Cocytus was present when Shalltear brought along Hilma Cygnaeus to present his master Ainz a witness who can explain their questions about the attack on the Sorcerer Kingdom's trade caravan of grains. Every Floor Guardian including Cocytus during the meeting, approved of the punishment Ainz has suggested for Hilma Cygnaeus to do. When that matter was concluded, discussion about Philip resumes where it left off while the Overseer explains their strategy for the Fall of the Re-Estize Kingdom.

With Ainz permitting questions to be asked by the Floor Guardians, Cocytus was the second person after Aura to question the strategy of their operation. Cocytus wanted to know why they didn't make use of the other noblemen besides Philip during the beginning of the operation. Demiurge answers Cocytus's question, stating that they did recruited someone like that already which was through blackmailing Philip's father, Baron Montserrat. It wasn't just that nobleman alone, but Demiurge also supports Cocytus's way of thinking, choosing to spare an expendable portion of the nobility who were at least somewhat capable and worthy for Ainz to rule over.

When Demiurge asked if the punishment should be on Philip alone, Cocytus refuses to have it just end there and suggests the same punishment to also be imposed on that nobleman's master.[26]

A month later after the Sorcerer Kingdom's declaration of war against the Re-Estize Kingdom, Cocytus had contributed to the campaign by destroying a city. He has also employed a tactic to successfully conquer several cities without problems using an undead army borrowed from his master. His work was commented by Ainz during a meeting with the Floor Guardians in Nazarick.

Upon seeing the death of the Death Knight and the Death Warrior by the flying armor giant, Cocytus was among those besides Demiurge and Shalltear to discover the reason why Ainz did not sent so many forces into the city of E-Naüru. This led to his colleague Demiurge praising him and Shalltear for understanding the reason behind why their master made the decision he did by sending in weak forces.[27]

Once Ainz arrived at the Re-Estize capital with his 10,000 undead army, it was said that Cocytus happens to be present by his master's side alongside other Floor Guardians like Aura, Mare, and Albedo. When Albedo informs Ainz that they should decline the envoy Zanac's request, he disagreed with her suggestion reasoning that it would reflect badly on the people's impression of Ainz by choosing not to confront the human. It was also revealed by Ainz that Cocytus is the one in charge of laying siege to the capital. Since Cocytus will be involved, Ainz has given the Floor Guardian the order to watch out for the Razor Edge sword later that is currently in the hands of Brain Unglaus.

After Ainz returns from his meeting with Zanac, Cocytus had a discussion with both Aura and Mare about the upcoming siege of the capital. With Cocytus as the leading commander alongside Mare who is second-in-command after him, he and the Floor Guardian were permitted to use the full extent of their abilities. Not only that, but he and the elf are also told by their master to not let any citizen of the Re-Estize Kingdom go unharmed once the battle starts. Once the battle began, Cocytus and his Frost Virgins set off from the front he had established in front of the capital. Cocytus was the one in charge of laying the capital under siege and upon raiding it, he was later confronted by the warrior Brain. Accompanied by his Frost Virgins, he introduced himself to Brain while the latter does the same.

Respecting Brain's resolve and warrior spirit, Cocytus stuck his Decapitation Fang into the ground and took out his God Slaying Emperor Blade before assuming a battle stance against him. Cocytus closed the distance between himself and Brain who was now within his range where he then easily ended the warrior's life with one single slash from his weapon. Although the two attacked each other at the same time, Cocytus emerged unscathed from the blow, as Brain's blade did not manage to reach him. After swinging the God Slaying Emperor Blade, Cocytus shook off the blood and fat from the katana and returned it back to his Item Box. With that one-on-one fight over, Cocytus pulled his halberd out from the ground and examined the body of the warrior Brain he had slain.

Once he took Brain's katana weapon and commanded his Frost Virgins to freeze the warrior's corpse, Cocytus resumed his walk to Ro Lente Castle. After reaching and getting inside Ro Lente Castle, he proceeded to stride towards the throne room. Cocytus entered the room and stood by his master's side as he sat upon the throne. While so, Cocytus ordered his Frost Virgins to stand watch outside the throne room and be on the lookout for Climb, instructing them to not harm the human but allow him entry. Due to the success of the operation ending with the Fall of the Re-Estize Kingdom, Cocytus was also among one of the Floor Guardians to have fulfill his role in the mission without problem.[28]

Trivia Edit

  • The name "Cocytus" is a reference to Dante's Inferno, in which Cocytus is the ninth and final layer of Hell. It is referred to as a frozen lake that houses all of humanity's traitors.
  • In the Web Novel, Cocytus is put in charge of the security from the 9th Floor to the 10th Floor. Cocytus commands a troop of armored beetle warriors. Additionally, he is the creation of Blue Planet.
  • Cocytus has four mercenary-type NPCs that serve as his vessels, which consist of three insectoids: a mantis, ant, and another fighter-type insect, and a giant brain.
  • If not for the battle with the lizardmen, it was believed by Cocytus that he would have without question, accepted the order of wiping away his shame and that of Nazarick with slaughter.

Quotes Edit

  • (To Shalltear and Aura): "You. Stand. Before. A. Supreme. Being. Contain. Yourself."
  • (To Demiurge about Ainz's future heir): "...Oh. How. Wonderful. What. A Glorious. Sight... Uncle... Uncle..."
  • (To Demiurge): "Ah. What. A. Beautiful. Sight... Truly. it. Was. Everything. I. Have. Ever. Dreamed. Of."
  • (To Demiurge): "...Demiurge. You. Dare. Ask. Albedo. To. Resign. The. Position. Of. Guardian. Overseer. Which. The. Supreme. Beings. Gave. Her? This. Is. Treachery!"
  • (To Albedo and Demiurge): "I. Mentioned. It. Before. But. The. Entire. Fight. Has. Gone. As. Ainz-sama. Planned. I. Am. In, Awe. Of. His. Prowess."
  • (To Albedo and Demiurge): "...His. Extraordinary Ability. As. A. Magic. Caster... No. As. A. Combatant. Is. Truly. An. Inspiration."
  • (To Demiurge): "I. Hope. You. Can. Help. Me. Think. Of. Something. If. This. Carries. On. We. Will. Be. Defeated. I. Can. Accept. A. Personal. Defeat. But. I. Cannot. Allow. The. Great. Tomb. Of. Nazarick. — The. Supreme. Beings. — To. Be. Disgraced. In. Such. A. Way."
  • (To himself): "They. Will. Never. Forgive. Me. If. Things. Get. That. Bad. Not. Even. My. Life. Will. Be. Enough. To. Atone."
  • (To himself): "If. The. Master. Is. Disappointed. And. Leaves. Like. The. Other. Supreme. Beings. What. Should. I. Do..."
  • (To himself): "No. That. Cannot. Be. Ainz-sama. Would. Never... Abandon. Us."
  • (To himself): "How. Could. Such. A. Merciful. Master. Abandon. Us?"
  • (To Ainz): "I. Am. Deeply. Remorseful. For. My. Inability. To. Achieve. Victory. Even. After. Receiving. Command. Of. My. Own. Troops. And. For. The. Loss. Of. The. Elder. Lich. Commander. That. You. Personally. Made. Ainz-sama."
  • (To Ainz): "I. Underestimated. The. Lizardmen. I. Should. Have. Been. More. Careful."
  • (To Ainz): "Yes. I. Did. Not. Have. Enough. Information. From. This. Battle. I. Learned. That. My. Chances. Of. Victory. Would. Be. Slim. If. I. Did. Not. Know. The. Enemy’s. Strength. And. The. Terrain."
  • (To Ainz about the Lizardmen): "Yes! In. The. Future. They. Might. Breed. Mighty. Warriors. Therefore. It. Would. Be. A Shame. To. Wipe. Them. All. Out. Right. Now. Your. Servant. Submits. That. It. Would. Be. Better. To. Instill. A. Strong. Sense. Of. Loyalty. Among. Them. So. That. When. Stronger. Lizardmen. Appear. We. Can. Take. Them. As. Minions."
  • (To the Lizardmen): "This. Might. Be. Rude. To. Warriors. Who. Are. Ready. To. Give. Their. Lives. But. I. Must. Inform. You. That. My. Side. Of. These. Pillars. Will. Be. Your. Grave. Any. Who. Cross. It. Shall. Die."
  • (To Albedo): "The. Opponent. Desires. To. Have. A. Battle. Of. Wits. With. Ainz. Sama, If. We. Rejected. Him. Outright. It. Would. Reflect. Negatively. On. The. People's. Impression. Of. Ainz. Sama's. Magnanimity."

References Edit

  1. Overlord Volume 01 Chapter 2: Floor Guardians
  2. Overlord Volume 01 Intermission
  3. Overlord Volume 01 Chapter 4: Duel
  4. Overlord Blu-ray 01 Special: The Emissary of the King
  5. Overlord Blu-ray 02 Special: The Guardians' Vacation Arc
  6. Overlord Volume 03 Chapter 4: Before the Death Match
  7. Overlord Volume 03 Chapter 5: Player Vs Non Player Character
  8. Overlord Manga Volume 06 Special: The Show Must Go On! Arc
  9. Overlord Volume 04 Special Drama CD: The Sealed Evil Tree Arc
  10. Overlord Volume 04 Chapter 3: Army of Death
  11. Overlord Volume 04 Chapter 4: The Dawn of Despair
  12. Overlord Volume 04 Chapter 5: The Freezing God
  13. Overlord Volume 08 Side Story 2: A day of Nazarick
  14. Overlord Volume 06 Special Drama CD: The Dark Hero's Story Arc
  15. Overlord II Blu-ray 01 Special: Ainz Raises Money
  16. Overlord Volume 05 Chapter 2: Blue Roses
  17. Overlord Volume 06 Chapter 6: Introduction of Royal Capital's Disturbance
  18. Overlord Volume 07 Chapter 3: The Great Tomb
  19. Overlord Volume 07 Chapter 4: A Handful of Hope
  20. Overlord Volume 09 Chapter 1: A War of Words
  21. Overlord Volume 10 Chapter 1: The Sorcerer Kingdom of Ainz Ooal Gown
  22. Overlord Volume 11 Chapter 1: Preparing for the Unknown Land
  23. Overlord Volume 11 Chapter 2: In Pursuit of the Land of the Dwarves
  24. Overlord III Blu-ray 01 Special: Nazarick Mythology Arc
  25. Overlord Volume 13 Chapter 5: Ainz Dies
  26. Overlord Volume 14 Chapter 1: An Unexpected Move
  27. Overlord Volume 14 Chapter 2: The Beginning of the End
  28. Overlord Volume 14 Chapter 3: The Last King

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