Has light pink hair and a bell around his neck. Basically a total lunatic. He's nice, but he once jumped off the third floor for no reason. He's not afraid of bullies. He's a bit of a weakling, yet he acts tough to the weak and cowers before the strong. He's incredibly crafty. For some reason, he doesn't talk to girls, but the school's most popular girl keeps hitting on him(?). He has an energetic and bright personality.

Very passionate and one of Chwimudeung's friends. A brutal Teto-girl(?). She is female and has sky-blue hair. She wears glasses. She has a complete Teto personality(?).

Possesses monstrous strength and is incredibly handsome☆ (His grip strength is 50!). A manly Teto-guy who protects the weak Chwimudeung. He's kind and gentle, but there's no stopping him when he's pissed off. He's a nice guy who doesn't get angry even if you suddenly hit him(?). He has a kind and sweet personality. Whenever the Red Bully acts up, he's the one who drags him away. He is the strongest among the students.

Chwimudeung's younger twin brother. They look so much alike that even the teachers couldn't tell them apart when they swapped name tags to prank their friends on April Fool's Day. He's quiet and cool-headed, but he finds Chwimudeung (his older brother) adorable(?). He has a cool yet affectionate personality.

Wears glasses and is very kind. He has a quiet personality and doesn't talk much. He is extremely tall.

He openly messes with Kim Min-jae or Chwimudeung, only to be dragged away by Young-jjang or Geoin-i. Being a bully, he's strong, but he's below Geoin-i and Young-jjang. He has red hair and a nasty temper.

He is incredibly tall, even taller than Glam-i. Whenever the Red Bully causes trouble, he catches him and drags him away(?). He's quiet and strong, but not as strong as Young-jjang.

The teacher who conducts the classes.

A teacher who is even stronger than Young-jjang. Female. Wears glasses. She is terrifying when angry. Her strength is no joke...