Mr. Eclipse: Wears Anubis-themed decorations and is a cheerful disco dance teacher. He is a shadow person like Seize and once had his heart ripped out by him. He is on bad terms with Hinata.

Mr. Foxtrot: Has an 'X' for a left eye; when angry, it tears open to reveal a black sclera and red pupil. A cheerful, 4m tall, playful dance teacher with flexible joints. He snaps the bones of failing students.

Mr. Strontium: Wears a black gas mask and has long black hair. Quiet, polite, and serves as Miss Bloomie's assistant. He is a dragon-kin but lost most of his power after losing his left eye. His real name is Benedict. He doesn't really kill students. He uses a pseudonym to hide from his father. 253cm.

Mr. Hotchkiss: A crafts teacher with a letter for a left eye and a stapler for a left arm. He kills failing students. Long black hair. 3m.

Mr. Brumeyer: A janitor who hates his job and kills students who litter. His left arm is a vacuum cleaner. He likes Cledor and has a short temper. 3m.

Mr. Tron: A cute robot whose core is a blue slime. He is the mechanical engineering teacher.

Mr. Demi: Has a crush on Sasha and is a timid music teacher. 180cm.

Mr. Seize: The anatomy teacher who carries large scissors. He is obsessed with Barrel and is a bit of a lunatic. 2m.

Mr. Vane: Has a red halo and a pair of wings, looking like a mix of a demon and an angel. He is the vice-principal and, unlike the principal, is kind and polite. 281cm.

Mr. Eugene: The PE teacher who seems to have a gentle personality. He doesn't appear to kill students. His left arm is a golf club.

Miss Elvara: The school nurse with red eyes and a calm demeanor. She is skilled enough to revive even dead students. 170cm.

Miss Ashatchu: The owner of the school cafe, kind and energetic. She can make 12 types of drinks, including Americanos. 170cm.

Miss Bloomie: Has a utility knife fused to her left arm. She has black hair and is the shortest among the teachers. Science teacher. 168cm. She stabs failing students to death.

Miss Thavel: Language teacher with creature-like hands. She has three alphabet blocks on her head and deer antlers. Playful personality. She tears failing students apart. 251cm.

Miss Bogurs: An electric eel beastman with sharp blue eyes and a red safety helmet. The swimming teacher, very irritable. 330cm.

Miss Sasha: Her left eye is a green book. She is the art teacher and also a kindergarten teacher. A kind teacher who doesn't kill students. 169cm.

Miss Hinata: Religion teacher and kindergarten teacher. At 4m, she is the tallest among the female teachers. Usually keeps her eyes closed; it's said she's scariest when she opens them. Carries sun decorations and a spear to stab kindergarteners who are touched or students who fail.

Miss Cledor: Librarian. Quiet, with a key for a left arm and a lock for a left eye. Kills students who make noise. She likes Brumeyer. 2m.

Miss Emily: History teacher. The only Black teacher, appears to have a cheerful personality.

A bat beastman and security guard. 518cm.

He uses polite speech and is kind yet timid. He has bat wings and ears, and his left eye is a monitor that displays emotions through emoticons. He is on the students' side and likes s'mores. However, he becomes monstrously cruel toward intruders. He wears his long white hair in a ponytail and has a long black tail.

298cm. Has a compass fused to her left arm. Mathematics teacher.

She loves Oreos immensely. She pressures failing students and kills them with her compass. She has a playful side as well.

The Principal. 189cm.

Cold personality with two horns, though one is broken. She is a caffeine addict and highly coercive, but she completely ignores the murders committed by the teachers. She isn't a monster, but the teachers cannot touch her.

Twins, safety officers. 281cm.

Redhalt: Has red sclera and long black hair. Realistic and blunt. Wears a white cap and has white skin.

Greenmile: Has green sclera and long black hair. Energetic and mischievous. Wears a black cap and has black skin.

When angry, both of their heads flare up like flames. They move around on roller skates. They can transform their left arms into gun barrels. They dislike bad students.