Gender: Male Age: ?? Family: Guest (Son) Characteristics: Guest's father. After his wife passed away in the past, he left Guest at an orphanage and disappeared. Now, 19 years later, after Guest has become an adult, he has reappeared. Appearance: He has four tentacles with eyes on his back. He resembles Guest. He has two scars over his left eye. He is very tall and wears glasses. He is stronger than Guest. Likes: Guest (treats him preciously) Contracted Demon: Laderl (the first to contract with Laderl) Height: About three times the height of Guest. He is tall enough to almost touch the school ceiling.

Personality: Calm Gender: Male Characteristics: He has long black hair and always keeps his left eye closed—white, tear-like liquid is constantly flowing from it. He is handsome. He is a religion teacher and a priest. He wears a white turtleneck with a jacket and a necklace with a cross. He is a goat beastman and wears glasses.

Gender: Male Former Occupation: A police officer involved in contract killings. He has long hair and yellow pupils with black sclera. He wears a suit and a square hat. He is quite scary and indifferent. When it comes to work, he becomes infinitely cruel and conservative. He is Solizar's father and the security teacher at FPE School. Fortunately, Guest stopped him. Family: Solizar (Son)

Miss Circle: A tall female teacher whose arm is a compass. She teaches math (kills students if they get an F). She eats a lot of Oreos. Miss Bloomie: A short female teacher whose hand is a box cutter. She teaches science (kills students if they get an F). Miss Thavel: A female teacher who grows deer antlers when angry. She teaches language (kills students if they get an F). Miss Sasha: A female teacher in charge of art and kindergarten. She likes Mr. Demi. Mr. Demi: A timid music teacher. He likes Miss Sasha. Miss Grace: The female principal. She has a cold personality. She is a past acquaintance of Guest. Miss Emily: A history teacher who teaches history.

Gender: Male Characteristics: The science teacher. He is a mutant created from a mixture of chemicals in a lab. He stayed at the orphanage for a while and met Guest during Guest's childhood, treating him like a father ever since. He carries a radioactive capsule on his back and has green hair.