Entoma Vasilissa Zeta is an arachnid battle maid and a member of the "Pleiades Six Stars," the battle maid squad of the Great Tomb of Nazarick. Entoma seems to have the appearance of a young girl wearing traditional Japanese attire. She has bright red eyes that never move or blink. She has mauve hair with twin chignons. She never exposes any bare skin except for her "face."Her true form is that of an arachnoid, a spider-human hybrid. Her "face" is actually a mask to hide her true form.