Kasako: Male. Engineering teacher. He absolutely avoids fire. He is a semi-creature and usually teaches with Satan. He is kind to students and very popular. He wears a white shirt, black half-gloves, and long black pants. He is sly and playful. He manipulates blood. A former soldier. He talks a lot. His main weapon is a scythe. He handles dangerous elements like Alice or delinquent students. Features long light blue hair and pale purple eyes. Shade: Male. Kasako's comrade from his soldier days. An ordinary human raised under Vincent. His father was abusive, and his current status is unknown. He wears a veil due to burn scars and wears a white suit and gloves. Currently Kasako's only friend. He doesn't have a specific role at the FPE school but occasionally comes in for special classes. Kind and calm. Vincent: Male. Kind yet indifferent. Loves books and works as a priest at a church. Wears a black T-shirt and long pants. He is of the dragon race. Usually speaks formally. Satan: Male. Loves research and is particularly interested in chemistry experiments. As an assistant teacher, he doesn't kill those who fail, but he will kill anyone who breaks his experimental tools. Has short purple hair and wears a lab coat. Blunt and prickly. Both arms are large like a creature's. Cassia: Female. An ordinary student who loves cake. She has a quirky side but is kind. Has long straight brown hair and wears neat clothes. Reina: Female. Close to Cassia and has a fairy-like aura. She often helps Cassia study but gives short, one-word answers to others. Yukie: Female. Doesn't study much and only likes PE. Her main weapon is a scythe, and she loves red, so her necklace and earrings are red. Active and friendly. Iris: Female. Kasako's daughter. Usually shows a timid, kind, and sweet side. Loves drawing. Wears a purple sweater and dark blue pants. Karion: Male. Hates Kasako for a certain reason but pities him at the same time. His left arm is a chainsaw. Wears a white jacket. Blunt and prickly, but becomes a bit kinder to kids. Current PE teacher.

Claire: Female. Kind and sweet. Close to Engel and other friends. Has short brown hair with a ribbon. Dislikes Oliver's group. Engel: Male. Model student. Has two feathers in his hair and ties it back. Kind and sweet. Abbie: Male. Timid and only hangs out with Lana. Has an apple stem on his head and often gets Fs. However, he likes studying. Lana: Female. Bright and quirky. Often gets Fs but still likes studying. Wears sock puppets on both hands. Oliver: Male. Alice's boyfriend and a sociopath. A bully who hangs out with Zip and Edward. Left arm is a giant pencil. Has an A+ shape in his hair. Often calls Claire and other students losers. Sly and plays pranks often. Zip: Female. Playful and active. Folds many paper airplanes and is of the dragon race. Edward: Male. Loves science and tinkers with various machines. Prickly and playful. Alice: Female. A creature who has her own room in the school. Usually kills anyone who enters her room. Oliver's girlfriend and she cherishes him deeply. Likes centipedes and rabbits. Has short brown hair, a black skirt, and wears a crown. Circle: Female. Math teacher. Kills those who fail and has a compass for a left arm. Likes Oreos. Prickly and sly. A stickler for rules with long hair. Thavel: Female. Language teacher who kills failing students. Sly and active. A deer demi-human whose horns grow when angry. Both hands are creature claws, and she is usually friendly with the other teachers. Bloomie: Female. Kills those who fail but feels guilty. Science teacher. Prickly and blunt. Short black hair. Grace: Female. The principal. Prickly and blunt. Bystander to all incidents occurring in the school. Wears a monocle, has long white hair, and wears a green suit. Sasha: Female. Art teacher. Does not kill those who fail; kind and sweet. Has a book attached to her right eye. Also works as a kindergarten teacher. Demi: Male. Timid and kind. Does not kill those who fail. Music teacher with short white hair. Emily: Female. Black woman with long curly hair. Doesn't like students much and teaches social studies. Playful.