Born to a father with ultimate strength and a mother with hyper-speed, Muneung was unfortunately born without any powers... However, unlike other ability-users who rely solely on their powers (except for Kim Jineung in Class B), he is highly intelligent. He has a realistic and stoic personality. Gender: Male. People say his orange hair is a mix of his father's red and mother's yellow, but the truth is, they're a family of hair-dye enthusiasts.

Muneung's father. He is incredibly strong—strong enough to destroy the world, let alone the Statue of Liberty. Despite his ultimate power, he is quite immature, often making bets with his son and causing trouble. He is deathly afraid of his wife. He breaks the door to his son's room so often that he's surpassed ten replacements by now. He has zero fashion sense.

Muneung's mother. A hyper-speed user who is quite sharp and holds absolute authority in the household, capable of keeping even her husband—who possesses the world's strongest power—in check. She can circle the globe seven times in one second. She is flawless and processes work at an unimaginably fast pace.

A friend of Muneung, Namu, and Guest. Currently in Class D. He can ignite all ten of his fingers, and when he clenches his fists, the flames merge into a much more intense fire. He is somewhat overconfident in his abilities and used to lack emotional intelligence, but he is now best friends with Muneung and Namu.

A friend of Muneung, Bul, and Guest. Currently in Class D. He has a kind personality. He used to think he had to feel ashamed to transform into a useful plant, but he discovered he could transform through other emotions as well. (He transformed into a tree when he felt a strong desire to become stronger.)