Entoma Vasilissa Zeta

Entoma Vasilissa Zeta (エントマ・ヴァシリッサ・ゼータ, εντομα・βασιλισσα・ζ) is an arachnid battle maid and a member of the "Pleiades Six Stars," the battle maid squad of the Great Tomb of Nazarick. She was created by Genjiro.

Appearance
Entoma has the appearance of a young girl wearing traditional Japanese attire. Her red eyes are cute, but they never move or blink. She has mauve hair with twin chignon. Entoma never exposes bare skin except for her "face."

Her true form is a spider-human (arachnoid). Her "face" is actually a mask-shaped insect and her hair is formed in a manner similar to a rolled centipede's. It is clear that she looks inhuman in the illustration, yet in the novel, no one notices her identity as a monster until she removes the mask.

She also disguises her voice with that of a cute girl by using a leech that steals the voices of her human victims after killing them. Her original voice is harsh and grating, similar to that of Cocytus. Currently, she is using the voice of Arche Eeb Rile Furt.

Personality
Entoma likes to eat humans. Though she does not mind what kind of person she eats, her favorite part happens to be the muscular arm of men. If there are no humans to eat, she eats snacks called "green biscuits" instead. She also tends to eat the insects inside the Black Capsule.

Despite treating humans as food, Entoma's nature is not considered extremely evil. If she comes across humans when she is sated and they do not bother her, she will ignore them rather than eat them. She also enjoys hunting for prey by weaving webs all across Nazarick's 3rd and 6th Floors.

According to Entoma, she does not always act like a hungry eater all the time. Sometimes, she likes to weave webs as a form of trap. She does so with the intention of capturing her prey for the thrill of it.

Entoma dislikes her original voice to the point where she becomes quiet after losing her fake voice. For that reason, she does not speak unless it is necessary to do so in the presence of her master. However, Entoma is the type to harbor grudges towards anyone who damages her clothing and voice, such as Evileye, wishing to exact vengeance on them if the opportunity ever presents itself.

Also Entoma, like many of the NPC's made by the 41 Supreme Beings, takes immense pride and joy at her physical appearance, role, and job given to her by her creators. During her battle against Blue Roses, where Gagaran and Evileye constantly insult her, Entoma in particular shows immense anger and hatred towards Evileye. This is due to what Evileye said to Entoma, mockingly asking her what kind of "sick freak" would want her to be their maid and serve them. This ends up causing her to enter into a unbalanced/uncontrollable homicidal rage for the insult not only towards her, but towards her creator. Later on, she makes a promise with Ainz that if there is ever an opportunity involving the need to kill off Evileye, she will be the one to deal with her. After Entoma loses her previous stolen voice, she wants to make Evileye suffered by stealing the latter's voice and making it her own.

Background
Entoma Vasilissa Zeta was created by Genjiro as one of the battle maids, the Pleiades. They served as a last line of defense against intruders. However, because she was unlikely able to stand against enemy players who managed to come that far, her only real purpose was to distract the invaders until the guild members of Ainz Ooal Gown were able to fully prepare for their final stand in the throne room.

The Undead King Arc
Entoma, along with her sisters, are ordered by Momonga to guard the 9th Floor. She and the other Pleiades are on standby and waiting for Ainz Ooal Gown.

The Dark Warrior Arc
Entoma tries to contact Ainz about a grave situation within Nazarick, but Ainz says that he will have to reply back later. Later, after Narberal Gamma defeats Khajiit Dale Badantel, she considers giving his burnt corpse to Entoma as a present.

The Sealed Evil Tree Arc
Entoma, Yuri, and Shizu are sent by Ainz to help Narberal in her work as an adventurer.

The Lizard Man Heroes Arc
Entoma accompanies the invasion force and is ordered to evaluate Cocytus's progress in the upcoming battle against the lizardmen. After Cocytus's forces are defeated, she tells Cocytus that Ainz has summoned him back to Nazarick.

The Maid Tea Party Arc
Entoma participates in the monthly Pleiades report and tea party. Yuri asks her to prepare the tea and the snacks. When Narberal reports her work with Ainz, Entoma and the others get jealous of her closeness with Ainz. She also acts envious towards her sisters, because all of them except her received orders directly from Ainz.

While eating one of her foods, Entoma accidentally spills blood in Shizu’s drink. Because of this, she is forced to drink it as punishment for ruining her sister's food. When Solution talks about her favorite type of meat, Entoma asks if the quality of the meat really matters, considering the way Solution eats. She supports Solution's idea of asking Ainz to let them have one of the humans that are being interrogated while they're still alive.

The Men in the Kingdom Arc
Nazarick's forces raid Hilma's Mansion. Among the forces, Entoma is the one in charge of killing and eating Hilma's bodyguards. She is spotted by Gagaran while eating a human hand. Gagaran insists on attacking despite being advised otherwise and they start to battle. Entoma overwhelms her, but Tia and Evileye join the battle and beat Entoma with the help of Evileye's insecticide spell, losing her Mouth-tongue Bug in the progress. However, just before she's about to be killed, Demiurge appears and saves her.

She later participates in Demiurge's plan to make Momon a lasting hero in the Re-Estize Kingdom. She plays the role along with the other battle maids as Jaldabaoth's underlings. She partners with Lupusregina Beta and Solution Epsilon. They fight against Nabe and continue to do so until Jaldabaoth orders a retreat.

The Invaders of the Large Tomb Arc
When Ainz inquires Entoma about her reward for fulfilling her task in Demiurge's operation, she is given permission to kill Evileye if she ever shows up again.

Entoma, along with her fellow Pleiades, except for Narberal, encounter Dragon Hunt on the surface of the Great Tomb of Nazarick. After Entoma watches the workers getting slaughtered by the Nazarick Old Guarders, she thinks of eating the mutilated arms of the deceased, but is stopped by Yuri, who tells her that all corpses were to be collected for Ainz's experiments while those who survived are to be taken to the torture room. Later on, after Arche, a member of the worker group Foresight, is killed, she uses her bugs to take Arche's vocal cords for her new voice while the rest of her body is distributed among the residents of Nazarick.

The Pleiades Day Arc
Entoma is seen on the surface of the Great Tomb of Nazarick, stationed in the log cabin while acting as a sentry. She is in the middle of snacking when Yuri and Shizu come to find her.

Upon being asked by Yuri if she is dissatisfied with anything, Entoma states that she wishes to have a place to weave a web of her own somewhere in the tomb.

The Witch of the Falling Kingdom Arc
Entoma contacts Ainz through the [Message] spell. She requests that Ainz returns to Nazarick immediately, which he obliges to.

Trivia

 * In the Web Novel, Entoma's facial features were described as having an extremely noble face, with stiffly bound eyes that could not be seen, a mouth that was closed to the point that it seemed that she disliked talking, glossy black hair that was held up in a side-up hairstyle. Her skin was black. Her maid uniform was black as well and was described to be more armored in appearance than that of Narberal Gamma.
 * Her name 'Entoma Vasilissa' means insect queen in Greek.
 * In the first anime episode of Season 1, Entoma's Mask Bug is shown with its eyes closed when she and her other sisters initially appeared.

Quotes

 * (About Food): "While the fat of women's meat makes it tender and children's meat tastes good despite having less fat, eating the meat of a muscular man is best when trying to lose weight."
 * (To Gagaran): "Heh, do you like to spin things around and make woosh woosh sounds?"
 * (To herself about Evileye): "What did this woman just say to me? Me, a Pleiades Battle Maid of the Great Underground Tomb of Nazarick, one who serves the Supreme Beings?"
 * (To Gagaran, Tia, and Evileye): "OnLy To yOu GuYs! i WIlL Show YOu WhaT TRUe TERrOR MEAnS! aftER KIlliNG YOu GuYS i WiLl TUrN You AlL into COrpse DoLLs!"
 * (About Evileye): "tHat lItTle bRaT ToOk mY VoicE! i WAnT To lEt HeR fEeL wHaT iT’S LikE!"
 * (About Evileye): "If iT wAs Up tO Me I WoUlD fIgHt hER tO tHe DeATh!"
 * (To Ainz about Evileye): "In tHAt cAse...AInZ-sAma, iF tHe cHanCe to kiLL tHat bRaTty giRL sHows uP, pLeASe leT me kNow. I wANt heR to alSo eXpeRIenCe tHe fEeLing of loSiNg heR voICe."

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Entoma Vasilissa Zeta