Entoma Vasilissa Zeta

Entoma Vasilissa Zeta (エントマ・ヴァシリッサ・ゼータ, εντομα βασιλισσα ζετα) is 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 girl wearing clothing similar to the traditional Japanese style. Her eyes are cute, but they never twinkle or blink. She has brown hair with twin chignon. She never exposes bare skin except her face.

Her true form is a spider-human (arachnoid). Her face is a mask-shaped insect and her hair is formed from an organization 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 human victim's voice. Her original voice is harsh and grating, similar to that of Cocytus.

Personality
Entoma likes to eat humans, her favorite part being the muscular arm of men, though she doesn't mind what kind of person she eats if she is given an opportunity. If there are no humans to eat, she eats snacks called "green biscuits" instead. 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 doesn't like her original voice, so she becomes quiet when she loses her fake voice.

The Dark Warrior Arc
She contacted Ainz about the grave situation about Nazarick but Ainz said that he will have to replied back later.

The Lizard Man Heroes Arc
She became an observer for Cocytus upcoming battle against the lizardmen. She tells Cocytus that Ainz has summoned him back to Nazarick after his failure to annihilate the lizardmen.

The Men in the Kingdom Arc
and II Arc Nazarick forces raided Hilma's Mansion, She proceeds to eats Hilma's bodyguards. She was spotted by Gagaran while eating a human hand and suggested to just ignore her but Gagaran refused, and they started to battle. Entoma overwhelm Gagaran but Tia and Evileye joins the battle and beats Entoma with the help of Evileye's insecticide spell, and losing her Mouth-tongue Bug in the progress. However, just before she's about to be slain, Demiurge appeared and saved Entoma.