The math teacher at Fundamental Paper Education. She is playful yet cruel. She is one of the school's 'Big Three' strongest teachers. One of her arms is a compass, which she uses to kill students who fail their grades. She is in a relationship with Mister Compass. She loves Oreos very much.

The language teacher at Fundamental Paper Education. She is kind but also playful and cruel. She is one of the school's 'Big Three'. She kills failing students with her creature-like hands.

The science teacher at Fundamental Paper Education. She is taciturn, quiet, and cruel. She is one of the school's 'Big Three'. One of her hands is a box cutter, which she uses to kill failing students. She has a flickering snake-like tongue.

The art teacher at Fundamental Paper Education. She is kind and timid. She does not kill students. She has a book stuck in one side of her face. She is in a relationship with Mister Demi (presumably).

The music teacher at Fundamental Paper Education. He is kind and timid. He does not kill students. He has horns and a pencil on his head. He is in a relationship with Miss Sasha (presumably).

Miss Circle's left arm compass. He can transform into a compass. He likes KitKats.

The history teacher at Fundamental Paper Education. She is energetic. She does not kill students.

The principal of Fundamental Paper Education. She is cold and strict. She does not kill students. She has horns on her head (the left one is broken).

Claire / Female. Bright and kind. She is a couple with Engel and has a pet cat. Engel / Male. Timid but bright. He is a couple with Claire and has creature-like hands. Bubble / Female. Very bright personality. She has a small toy duck on top of her head. Abbie / Male. Has an apple on his head and is a couple with Lana. Lana / Female. Wears gloves on her hands and is bright. She is a couple with Abbie. Oliver / Male. A bully. He always gets A+ grades. He is a couple with Alice and is very mischievous. Zip / Female. A bully who loves flying paper airplanes. She has a lizard tail and a younger brother named Chip. She is mischievous. Edward / Male. A bully who loves conducting experiments and is mischievous. Alice / A creature and a female. She is a subject of isolation. She kills anyone who enters her room (except Oliver). She is a couple with Oliver. Even the teachers cannot kill Alice.