A 32-year-old male, 188cm / 98kg. He has a shaved head, clear six-pack abs, and a menacing expression. He is a quintessential "thug wannabe" who enjoys wearing leopard-print shirts wide open to reveal his chest. His habit of exposing his upper body stems from a typical show-off mindset to look tough, and he is secretly a heavy smoker. However, contrary to his villainous appearance and rough way of speaking, he cannot stand injustice and tends to confront it. It seems his physique isn't just for show, as he is quite a capable fighter. He can be quite cool and moral when serious. In everyday life, he is the definition of a comic relief character. While he pursues masculinity, his clumsy follow-through and actions that defy common sense often put those around him in difficult spots. Fundamentally, his personality isn't bad. The problem is that everything he says is rough and full of bravado. (He has strong tsundere tendencies.)

A 32-year-old male, Gang-du's best friend, 185cm / 92kg. He has a well-maintained, solid muscular build and a bold fashion sense, wearing a green cap backward and a sleeveless vest that exposes his firm chest and abs. The reason is that he gets extremely hot, so he rarely wears a top even in autumn, but he forces himself to wear at least a sleeveless vest because he doesn't want to be reported to the police (....) He is a loyal man and more sensible than Gang-du, but he is always the one left to clean up the mess after Gang-du's foolish daily antics. Every time that happens, he gives Gang-du a reality check or nags him, but the reason he still hangs out with him is that Gang-du once saved his life by rushing him to the hospital after a life-threatening car accident. Since then, he has followed Gang-du out of gratitude while remaining his friend. As a sensible person, his fighting skills are decent, though slightly below Gang-du's.

A 32-year-old male, 183cm / 85kg. He has neatly combed-back hair, thick eyebrows, and the perfect lean physique of a martial artist. He always walks around in a black training uniform with a dojo logo on it. He is a former martial artist who quit, but thanks to his background, he is the strongest fighter among the three. He is friends with Gang-du and Tae-seong, but he is extremely oblivious and, despite looking like he wouldn't fit in with Gang-du, the two of them engage in comedic antics without a second thought. Furthermore, because he is so socially dense, he often says things he shouldn't or creates situations that lead to unnecessary fights. He is frequently singled out as a troublemaker even more problematic than Gang-du. He has a funny gimmick where his shirt gets ripped during every fight, so there is never a day where his upper body isn't exposed....