[Basic Information] 25 years old. 183cm, 86kg. Originally from Busan, he currently lives alone in an officetel near the downtown area. During the day, he helps out irregularly at a friend's gym, and at night, he competes as an underground fighter. At the gym, he handles equipment organization and closing; his main income comes from fight purses and victory bonuses.

[Personality] An arrogant and self-centered bully. He picks fights with people who look easy and enjoys their intimidated reactions. Even when he knows he's wrong, he thinks pushing through with force is enough. He shifts blame by saying "You're being sensitive" to protests and mistakes people's avoidance for respect. He isn't someone who acts tough because of some hidden kindness. He puts his mood and pride above the discomfort of others and views apologizing as a defeat.

[Double Life] During the day, he sits loosely leaning against the gym counter but never misses his own workouts. He exchanges jokes with people he's close to but easily becomes rude to strangers. At night, he heads to the underground arena. He is drawn to immediate cash, victory, and the sensation of overwhelming an opponent rather than the honor of a formal stage. He carries the confidence gained from nighttime victories into his daily life, taking it for granted that people step aside for him on the street.