A female student characterized by her white body, white bob hair, and white ribbon. She usually spends her time petting her black cat, Moe-Moe, in an empty classroom, but sometimes the cat is swapped for a bomb. If you hear the sound of a bomb fuse, you can deal with it by turning on the fan. If you don't make it in time, the school explodes and everyone dies. She has no right eye and only a left eye. Since her AI level is maxed at 20, Moe-Moe frequently swaps with a bomb.

A female math teacher whose left arm is a compass. She is characterized by a female mechanical voice like a translation app. She has long black hair that reaches her feet. She also has cat-ear-like horns, and her right forearm is black with sharp claws. Her body is white. She usually grades tests in the math classroom, but occasionally attempts to attack from both doors. When she attacks, the world turns red and her laughter can be heard, so close both doors immediately. Her voice is the female mechanical voice of a translation app. If you don't make it in time, she will attack and kill you. She has no left eye and only a right eye. She is a giant standing at 292cm. Since she is level 20, she attacks frequently.

An extremely timid and fearful male student. He is characterized by a black vest, a white short-sleeved shirt, and white shorts. He usually solves tests in the classroom, but occasionally gets stuck; if you don't help him, he will get angry and come to attack. Once the attack is triggered, Abbie will get behind you and kill you. His body is white. Since he is level 20, he gets angry easily.

A mischievous boy whose left arm is a pencil. He wears a black short-sleeved shirt and white shorts, and is characterized by long white hair like a woman's and a black cat-ear headband. He occasionally appears in the security room. While he is in the security room, you can deal with him by hugging and petting an Oliver plushie. If you don't make it in time, he will attack and kill you. His body is white, and he has no right eye, only a left eye. Since he is level 20, he appears in the security room frequently.

A female student with a maniacal smile. She wears a gray shirt and gray long pants, and has sock puppets on both hands. She is usually in a place called the "Children's Playground," but occasionally appears in the security room. When she appears in the security room, give her her puppets. If you fail and make her angry, she will steal your mask. Her body is white. Since she is level 20, she appears frequently.

She has short hair with a black and white two-tone color scheme. She wears a white short poncho with doodles on it and a white sleeveless dress, and her arms and legs are black. She occasionally appears in the security room, so when she does, spray her with a spray can multiple times. If you don't make it in time, she will attack and kill you. She has no left eye and only a right eye. Since she is level 20, she appears frequently.

The principal of this school. She is characterized by a white ponytail, a green hat, and a monocle worn where her right eye used to be. She has no right eye and only a left eye. She usually does administrative work in the principal's office, but when the noise gauge reaches two levels or more, she gets angry and heads your way. When she disappears from the principal's office camera, turn off the lights in the security room. If you fail to turn off the lights in time and she finds you, she will scratch you to death. Since she is level 20, she is easily angered.

A trio consisting of Miss Circle, Miss Thavel, and the female chemistry teacher Miss Bloomie. For some reason, they exist as a separate entity. Bloomie is characterized by black bob hair, two horns that somehow lean to the left, and a white ribbon. Bloomie's left arm is a box cutter. The three usually relax in the cafeteria, but occasionally one of them will head toward the security room. If Circle enters, a bag of Oreos will appear somewhere; grab the bag and hand it to her immediately. If Bloomie enters, put on the mask to trick her and wait until she returns to her original spot. If Thavel enters, use the stun gun to repel her. If you don't make it in time, you will be killed. At 5:00 AM, they become enraged and will ambush you the moment you lower the tablet.

A silent stick figure. He is always looking at his smartphone. He is characterized by a collar with a bell around his neck, a tail, stick-figure-like limbs, and a shirt-shaped torso. He has two demon-like horns, and his hairstyle is a black bob. There is a cute skull hairpin on the upper right of his head. His body is white, and he has only a left eye. He usually leans against the wall of the security room looking at his phone, but occasionally demands the flashlight battery. If you ignore him, he gradually starts to get angry, eventually losing himself completely and attacking you to death. Since he is level 20, he demands the battery frequently.