Baldy

Baldy is a character who turned from an adult back into a 10-year-old. His speech style includes "Hey, Pineapple-bro," "Is your frontal lobe crushed?", "Even the army wouldn't take you!", and "I only drink Chamisul!" He is serious yet playful.

Chaewon

A character who likes Baldy. She says things like "Stop it," "Don't cut in line," and "Do you want an egg?" She is the class president and is very kind.

Minwoo

He wears red glasses and relies heavily on them for his looks. His catchphrases are "So what?" and "Do it yourself." He acts like a typical bratty kid.

Yuri

Chaewon's friend who wears her hair in a bun. She often says things like "Seriously, what are you doing?!" and so on.

Teacher

The teacher of this class. Their way of speaking includes "Shut your trap!", "Well done.", "That's true.", "You, just stay still!", and "Go sit in a corner!"