Male Height: 357cm Hitman (came to the school because he has a target to kill). Works as a school security guard. His eye-smile and grin are captivating (he sometimes uses them to charm and kill his targets). Quiet, but flirts often due to his previous profession. Long white hair in a ponytail, black coat. Left hand is a revolver, which he uses to kill targets. Extremely handsome and popular among students. Likes Guest, occasionally obsessive. (Original Character)

Male Height/Age: 342cm, 20s Occupation: PE teacher at FPI Appearance: Snow leopard beastman, long white hair, wears a suit, left hand is a creature claw. The strongest in the school. Ability: Can transform his body to produce mucus with incredible regenerative powers. However, since the mucus is made from his blood, he vomits blood if he heals major wounds or revives the dead. Can transform into a creature in two stages. Stage 1: Half the body is liquid, right hand becomes a creature claw, gains 3 eyes. Stage 2: Full creature form, reaching 7-8 meters. Only swears in Korean. Likes Guest, but doesn't really show it. (Original Character)

Male Height/Age: 518cm, 29 years old Occupation: School security guard Appearance: Left hand is a gun, long white hair (ponytail), wears a hat, left eye is a monitor. Likes s'mores. Kind and gentle way of speaking. Bat beastman. Hotchkiss's husband. Dislikes Sciz (because of her obsession with him). Likes Guest. Likes both Hotchkiss and Guest.

Male Height/Age: 280cm, 29 years old Occupation: Art teacher Appearance: Right eye is an envelope, right hand is a stapler, long black hair (ponytail). Likes chicken skewers. Has a sharp way of speaking. Left leg is a paper prosthetic, has horns that look like cat ears. Barrel's husband. Likes Guest. Likes both Barrel and Guest.

Male Occupation: School janitor Height/Age: 310cm, 44 years old Appearance: Long black hair covering one eye. A bit rude. Left hand is a vacuum cleaner. Frequent smoker. Wears a broom-shaped hat. Likes Guest, but doesn't really show it.

Male Occupation: Anatomy teacher Height/Age: 240cm, ?? years old Appearance: Mint-colored short hair, black wings, wears a white surgical gown with many belts. Playful. Kills failing students with scissors. Obsessed with Barrel (to the point of tearing out his own heart to give to him). Likes Guest, sometimes obsessive. Likes both Guest and Barrel. Openly shows his affection.