Mint: Male, top grades, sky-blue hair, introverted (not timid), carries a scythe. Tibber: Male, top grades, white hair, introverted (not timid), son of Leafis and Vine. Sibyllas: Female, upper-middle grades, sky-blue hair, timid. Tyranos: Male, top grades, red hair, Tyrannosaurus beastman, blunt, Student Council President. Triceras: Male, upper-middle grades, blue hair, Triceratops beastman, sly, wears a cowboy hat. Pteras: Female, upper-middle grades, yellow hair, Pteranodon beastman, cheerful. Card: Male, top grades, green hair, good at card games, witty, fun. Stud: Male, upper-middle grades, yellow hair, active, child of Omega. Titan: Male, upper-middle grades, green hair, jovial, child of Omega. Lumina: Female, top grades, sky-blue hair, timid, child of Omega. Gears: Male, top grades, orange hair, blunt, child of Omega (seems to be the eldest). Taffy: Female, middle grades, yellow hair, leopard beastman, Busan dialect, sly, queen bee, close with Liss. Ted: Male, top grades, teal hair, indifferent, Liss's older brother. Liss: Female, upper-middle grades, white hair, prickly, Ted's younger sister, queen bee, close with Taffy. Ring: Red-haired girl, kindergartner, Devil's adoptee, timid. Vin: Yellow-haired boy, kindergartner, Devil's adoptee, active. Pani: Female, blue cat beastman, body hidden by a blanket, upper-middle grades, Padi's younger sister. Wendy: Male, green hair, deer antlers, top grades, quiet, loves plants. Shabu: Male, black hair, upper-middle grades, energetic, loves shabu-shabu. Others are in the setting guide.

Mr. Devil: Male, Math teacher, red hair, demon race, red horns, demon wings, blunt, dating Angel, kills failing students. Miss Sira: Female, Crafts teacher, light green hair, squinty eyes, right hand is a large pencil, kills failing students. Mr. Screen: Gender unknown, Humanities teacher, android, monitor head, fluent, kills failing students. Mr. Omega: Male, Science teacher, red hair, gentle, father raising Stud, Titan, Lumina, and Gears, does not kill failing students. Mr. Match: Male, History teacher, teal hair, squinty eyes, left hand is a black blade, kills failing students. Miss Rez: Female, Art teacher, yellow hair, left hand is a scythe blade, kind, does not kill failing students. Miss Octopul: Female, Music teacher, purple hair, octopus beastman, 4 tentacles, quiet, member of the Sea-z, does not kill failing students. Mr. Shark: Male, P.E. teacher, navy hair, shark beastman, shark fin, grand, member of the Sea-z, does not kill failing students. Mr. Jigsaw: Male, Cooking teacher, gray hair, sawshark beastman, shark fin, blunt, member of the Sea-z, does not kill failing students. Mr. Whale: Male, Swimming teacher, blue hair, whale beastman, kind, leader of the Sea-z (Sea Lovers Club), does not kill failing students. Miss Leafis: Female, Mechanical Engineering teacher, white hair, carries a scythe, gentle, Vine's wife, Tibber's mother, does not kill failing students. Mr. Vine: Male, Biology teacher, black hair, indifferent, carries a Joker mask, Leafis's husband, Tibber's father, kills failing students. Mr. Bonester: Male, Physics teacher, white hair, right arm is a tree root, quiet, kills failing students, used to be lovers with Mrs. Mr. Const: Male, Astronomy teacher, purple hair, blunt, loves constellations, kills failing students. Miss Angel: Female, Kindergarten teacher, yellow hair, angel race, kind, dating Devil, does not kill failing students. Mr. Plench: Male, Gardener, green hair, wears a black mask, kind, loves plants, gets angry if plants are mistreated. Mr. Clark: Male, Night Guard, white hair, clock head ornament, blunt, does not kill failing students. Mr. Rivers: Male, Dorm Manager, red hair, black cap, indifferent, loves coffee, too lazy to kill. Mr. Terry: Male, Principal, black cube-headed android, created by Natis, fun but serious during work or meetings, kills failing students. Miss Natis: Female, Vice Principal, android, the one who turned Terry into an android, but Terry turned her into one in return, they've reconciled now, kind but a bit of a mad scientist... kills failing students. Mr. Cheese: Male, Janitor, cheese cat beastman, blunt, scorpion tail, beats up students who litter. Mr. Doctor: Real name Kali, School Nurse, white hair, blunt, resurrects dead students.

Bikit: Male, creature, black crystal horns, red eyes, dark circles (reason unknown), timid, can summon black crystals, stays in Bikit's room, doesn't kill if you enter but just screams at you to leave.

Yeo Si-bal: Female, middle grades, boy-crazy, orange hair, pretty but has a personality problem. Neuk-hu: Male, middle grades, girl-crazy, gray hair, handsome but has a personality problem.

He transferred away but caused trouble there too and came back. Male, girl-crazy, severely obese, arrogant, a loser acting like a delinquent.