Female, approximately 292cm tall. White skin. Lime green eyes. Long black hair tied in a ponytail, with a pair of black horns. She wears lime green goggles on her head and has shark-like teeth. She wears a black turtleneck under a white lab coat. She has black creature arms but is not a creature. She wears white slacks and black boots. Her left arm is missing, replaced by an acid sprayer containing lime green liquid, which is detachable. She sprays it wildly to subdue subjects. She is in charge of subject management and subduing subjects when they escape from containment.

Female, 213cm tall. White skin. White eyes. Short black bob hair, wearing a lime green beret that looks like a scrub cap. A medkit with a green cross is attached to her right eye, and she wears a white mask. She wears white vinyl surgical gloves. She has scars all over her body, a slit mouth, and sharp, pointed teeth. She wears a lime green short-sleeved shirt and lime green shorts, which serve as a nurse uniform. She wears black boots. She can detach the medkit from her right eye to treat injured colleagues with medical supplies. She always carries a clipboard. As the medical officer, she checks the subjects' numbers on her clipboard once a situation is under control. She is very strong and subdues subjects with brute force.

Female, standing at a relatively short 175-180cm. White skin. White eyes. Black bob hair with a pair of black horns. The top left of her hair is tied slightly with a white ribbon. She has a slightly slit mouth with shark teeth and wears a black gas mask that covers only her mouth. She wears a black turtleneck under a white lab coat. She wears black slacks and lime green boots. Her left arm is missing, replaced instead by a large syringe containing lime green liquid. It is detachable. She is in charge of subject management and subdues subjects by swinging her left arm.

Female, 266-271cm tall. White skin. Lime green eyes. White ponytail with an ahoge and a pair of small black horns. A post-it note is stuck to her right horn. She wears black hairpins and thin-rimmed glasses. She wears a name tag that says 'Miss Grace'. She wears a black turtleneck, a lime green long-sleeved shirt, and a long black skirt. She wears black loafers. She has black creature arms but is not a creature. Her weapon is a gun. She aims at Alice's room, which is marked with warning signs, and fires to force Alice out to resolve the situation.

A humanoid creature, presumed female. 165cm tall with apricot skin and white eyes. Brown short hair like a bob with an ahoge. She has lime green blush, wears lime green vinyl gloves, and a black circlet that looks like a crown. She wears a necklace with a potion model containing lime green liquid. She wears a white turtleneck, a light blue short-sleeved shirt, and black long pants like slacks. She wears black long boots. She is skilled with black tentacles. In her true form, her entire body is black, she has a black bob cut and circlet, red eyes, and black tentacles growing from her back. When Miss Grace fires into her room, she breaks down the door, transforms into her true form, and subdues subjects with her tentacles.

Female subject, mutated state. White skin. Two-tone long hair in dark and light grey with an ahoge, shark teeth. Her hands are fused with sock puppets that have sharp teeth. Wears a subject uniform marked 004, white socks. Her left face, arm, and leg are black due to experiments.

Female subject, mutated state. White skin. White bob cut, white ribbon on head. Sclera are black (inverted eyes) and mouth is slit. Wears a torn subject uniform marked 001. Her arms and legs are black.

Female subject, mutated state. A bubble human. White bubble hair in a wolf cut, with a white duck holding a toothbrush on her head. Black eyes with star-shaped pupils. Physically lacks a face and mouth. Wears a straitjacket marked 003, rendering her arms unusable.

Male subject, mutated state. Entirely black skin. Black wolf cut with a white apple stem. Only his left eye is visible and it is red. Four black creature arms on his back. Experiment number 005.

Male subject, mutated state. White skin. Long white hair with red and blue feathers stuck in it. Sightless eyes with an eyepatch over the right eye. Torn subject uniform marked 002. Black creature arms.