The homeroom teacher. Her hometown is the crime-ridden Mad City. She loves children, but she's crazy(?)—taking them to Mt. Everest when she said they were going to a small hill, or committing robberies.

A blue-haired student who has been with the teacher for a long time. He's a total otaku(?).

Wears a suit and a hat. He loves the Coffin Dance and is very good at performing it.

Bacon hair. He's tall like Peter Crouch. 201cm.

Wears a bucket on his head and has twin swords on his back. He uses a grappling hook and is highly skilled with both the hook and his swords.

The principal. A former soldier and supposedly an assassin who targeted Kim Jong-un(?). He doesn't usually scold anyone and just does his work(?), but if Teacher Rani says she's going to rob a bank with the students, he joins in.

Obsessed with Sans. Wears a rainbow hat and has equipment mounted on his right shoulder.

A guy who always talks about the Joseon Dynasty. He speaks in an archaic dialect and is proficient with historical weapons. Over 30,000 years old, he is a chosen one who adapts well to the modern world.

Constantly sings the Baby Shark song and is crazy(?) about sharks. Characterized by a blue shark hat. Carries a shark gun.

Has a light blue body and wears only a pink tank top. Bald. Loves dumplings (Mandu) and possesses an infinite supply of them.