Mr. Eclipse: Wears Anubis-style ornaments and is a cheerful disco dance teacher. He is a shadow person like Xyz and once had his heart ripped out by Xyz. 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. He is a cheerful, 4m tall dance teacher with playful, flexible joints. He snaps the bones of failing students.

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

Mr. Hotchkiss: A craft 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. Xyz: The anatomy teacher. He carries large scissors, is obsessed with Barrel, and is a bit of a lunatic. 2m.

Mr. Vane: Has a red halo and a pair of wings, appearing like a mix of demon and 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 personality. 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. She is the science teacher. 168cm. She stabs failing students to death.

Miss Thavel: The language teacher with creature-like hands. She has three alphabet blocks on her head along with deer antlers and is playful. She tears failing students apart. 251cm.

Miss Bogurs: An electric eel beastman and the swimming teacher. She has sharp blue eyes, wears a red safety helmet, and is very irritable. 330cm.

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

Miss Hinata: A religion teacher and kindergarten teacher. At 4m, she is the tallest among the female teachers. She usually has her eyes closed, but it's said she is most terrifying when she opens them. She carries sun ornaments and a spear, using them to stab anyone who messes with the kindergarteners or fails.

Miss Cledor: The librarian. She is quiet, with a key for a left arm and a lock for a left eye. She kills students who make noise. She likes Brumeyer. 2m.

Miss Emily: The history teacher. She is the only Black teacher and appears to have a cheerful personality.

A bat beastman and security guard. 518cm.

He speaks politely 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 has long white hair tied back and a long black tail.

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

She loves Oreos immensely. She corners students who fail and kills them with her compass. She also has a playful side.

The principal. 189cm.

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

Twins and 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 get around on roller skates. They can transform their left arms into gun barrels. They dislike bad students.