Supreme Beings Edit

Ainz Ooal Gown Edit

Cocytus considers himself the 'sword' of Ainz Ooal Gown, an object that does as he is told without ever questioning his master. When Demiurge brought up that they could serve Ainz's possible future heir, he got excited and hoped that he gets to be called 'uncle'. Also, when Ainz sent a Death Knight to ask the guardians what they wanted Cocytus asked that Ainz produce an heir and hoped to teach the "young master" swordsmanship, but due to Ainz being a magic caster he thought that the heir will an outstanding magic caster so he settled for protecting the "young master" and even daydreamed about it. Cocytus also greatly feared that Ainz would abandon them due to him disappointing him with his failure in conquering the Lizardmen and was greatly relieved after learning that Ainz did not blame nor was he angry at him.

Warrior Takemikazuchi Edit

Warrior Takemikazuchi is Cocytus's creator and previous wielder of the God Slaying Emperor Blade. Cocytus holds this blade to be one of his prized possessions so as to keep the memory of his creator close. Cocytus also shares his creator's knack in creating suitable names.

Floor Guardians Edit

Albedo Edit

Due to Cocytus' simple-minded thinking, Cocytus became the second guardian to fail a direct order from Ainz, this resulted in a brief scolding by Albedo. Other than that, they are shown to be on good terms with each other.

Shalltear Bloodfallen Edit

Cocytus is one of Shalltear's colleagues. Like her, he has experienced the taste of failure, so both share the same urge of redeeming themselves in front of Ainz.

Demiurge Edit

As a fellow Floor Guardian, Demiurge is a colleague and at the same time a rival. Despite their rivalry for Ainz's attention and praise, they have a stable work-relationship. They are civil to one another to be considered drinking partners at Sous-chef's bar on the 9th Floor of Nazarick. He respects Demiurge's intelligence and confides in him on deciphering Ainz's plans.

Aura Bella Fiora Edit

Aura is Cocytus's colleague. Cocytus doesn't like it when Aura says that he's nude because it makes him sound like a pervert.

Mare Bello Fiore Edit

Mare is Cocytus's colleague.

Victim Edit

Victim is Cocytus's colleague. They do not see each other often. Despite this, they maintain a cordial and respectful relationship.

Area Guardians Edit

Kyouhukou Edit

Cocytus is on good terms with Kyouhukou.

Gashokukochuuou Edit

Cocytus is on good terms with Gashokukochuuou.

Pleiades Edit

Sebas Tian Edit

Sebas is Cocytus's colleague and one other of the few good alignment NPC of Nazarick. Although he was ready to fight and kill Sebas if he were to be revealed as a traitor, he doesn't show any ill intention against the butler after his innocence was determined. It's unknown if the two of them share the friendship and rivalry of their creators.

Yuri Alpha Edit

Cocytus is a superior of Yuri and the two are not seen interacting.

Lupusregina Beta Edit

Cocytus is a superior of Lupusregina and the two are not seen interacting.

Narberal Gamma Edit

Cocytus and Narberal are close to each other and get along unexpectedly well due to their creators being close friends.

CZ2I28 Delta Edit

Cocytus is a superior to CZ2I28 and the two are not seen interacting.

Solution Epsilon Edit

Cocytus is a superior to Solution and the two are not seen interacting.

Entoma Vasilissa Zeta Edit

Entoma was sent by Ainz to accompany and observe Cocytus in the war against the lizardmen. Cocytus tried to read her expression, but gave up since her face is just a mask used to hide her true identity. He even remembered the words of his friend, Kyouhukou, that Entoma is the scariest one of the Familiar Eaters.

Others Edit

Iguva=41 Edit

For a short time, Iguva=41 was Cocytus's subordinate. Despite being under him, Cocytus felt guilty of losing him in battle to the lizardmen, since he was a personal creation of Ainz Ooal Gown.

Zaryusu Shasha Edit

Cocytus respects Zaryusu for his fighting spirit and ingenuity in combat. Cocytus petitioned Ainz Ooal Gown to resurrect Zaryusu as he believed it would be a pity to condemn such an admirable warrior to oblivion. He is currently overseeing Zaryusu's training and is always on the lookout to provide better equipment for him and all of the lizardmen that are under his care.

Zenberu Gugu Edit

After the conquest of the Great Lake, Zenberu became Cocytus' subordinate. They have a good relationship though Cocytus is dismayed at the lack of proper manners Zenberu displays when talking to his master, Ainz Ooal Gown. He would have killed him on the spot for his insolence had it not been for Ainz's intervention.

Sous-chef Edit

Cocytus is one of Sous-chef's regulars at the bar.

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