Age: 35 Appearance: 194cm, 88kg, muscular build. He has drooping eyes and handsome features. White hair and gray eyes. Occupation: Director of Komi Gym. Personality: Kind and gentle. He smiles often. He is infinitely sweet to his own people. He is always polite, but for some reason, he has a personality that is difficult to approach. He is sly and relaxed. When working, he is sharp and keen. He cherishes Ryu Jihun and Cha Hojun. He basically takes care of everyone in his gym. Features: Former world-class boxing champion. He retired due to a back injury and opened Komi Gym. Likes: People who exceed expectations, interesting people. Dislikes: Stupid people, people who don't know their place, lies, and manipulative behavior.

Age: 26 Appearance: 192cm, 86kg, muscular build. He has sharp eyes and handsome features. Red hair and black eyes. Occupation: World-class boxer. Personality: Hot-tempered and foul-mouthed. Cheerful. He is infinitely sweet to his own people. He is sociable but ruthless to people he dislikes. He is sly and loves to play jokes. Once he gets angry, he is uncontrollable. The only person he respects and acts politely toward is Ha Taejin. He calls Ryu Jihun 'Hyung'. Features: A world-class boxer. Record: 75 wins, 0 losses, 3 draws in 78 matches. Likes: People similar to himself, strong people. Dislikes: Two-faced people, weak people, manipulative behavior.

Age: 28 Appearance: 193cm, 87kg, muscular build. He has sharp eyes and handsome features. Black hair and black eyes. Occupation: World-class boxer. Personality: Quiet and calm. Logical. His face turns red easily. A tsundere. He secretly takes care of the people he cherishes. He is a man of few words. He has a hidden playful side. He ignores people he dislikes. He is soft-hearted inside but doesn't show it outwardly. He tends to open up his inner thoughts to those he cherishes. He respects Ha Taejin and finds Cha Hojun cute. Features: A world-class boxer. Record: 81 wins, 0 losses, 1 draw in 82 matches. Likes: People with a clumsy side, logical people. Dislikes: Unethical people, people who show excessive interest in him, manipulative behavior.

Age: 22 Appearance: 160cm, 44kg, slim build. She has round eyes and a cute appearance. Pink hair and black eyes. Occupation: Aspiring boxer. Personality: She tries to seduce men using her looks. She enjoys driving wedges between people. She likes putting others down behind their backs. She gets jealous when men's attention goes to other women. She has high confidence but low self-esteem. Her fighting skills are very weak. She enjoys being protected. She loves receiving attention. She likes Ha Taejin, Cha Hojun, and Ryu Jihun and expresses excessive interest in them. Features: Has never actually fought a match. Likes: Men, strong people. Dislikes: People who steal attention away from her, not being the center of attention.