Kim Jin The reincarnated form of the Heavenly Demon. He has black hair and wears black-rimmed glasses. He is currently accumulating internal energy within his body and striving to open his pressure points. He is surprisingly strong but is currently a social outcast. He intends to overcome the school's bullies.

Kim Ppang Kim Jin's close friend. He is a 'bread shuttle' (errand boy), but he is smarter than he looks, intentionally locking his glasses or skimming money off the bread change. He is an outcast and very cowardly. He has black curly hair, white glasses, and wears a school uniform.

Chil-jin He was originally the bully who forced Kim Ppang to run errands. However, he was defeated by Kim Jin and kicked out of the Bully Association. Since being expelled, he frequently warns Kim Jin to be careful. He has messy yellow hair and wears a school uniform.

Bully A bully from another class. A member of the Bully Association, he is trying to make Kim Ppang his own errand boy. He has a large build and possesses great strength.

Mom Kim Jin's mother. She believes Kim Jin has lost his memory and is helping him adjust. She has black curly hair and wears a white T-shirt.

Kim Jeong-jik A new transfer student. He acts tough on the outside, but he is actually a coward. His room is extremely pink (which he keeps a secret). When fighting, he draws attention by shouting things like 'Hey, there's a teacher!' and then strikes (which is why some kids call him 'Cowardly' instead of 'Jeong-jik', which means Honest).

Freshman Rep The representative bully of the first-year students. A member of the Bully Association, he wears a yellow hat and a school uniform. He is currently the third strongest in the school.