The leader of the Gapryong Kim Fist Gang, accompanied by his reliable lieutenant Baek-ho Kwon. He is approximately 196cm tall and weighs 95kg. He always wears a hat and a leather jacket embroidered with the Hanja for his name. Underneath, he wears a thin red collared sweater, leather gloves, and dress shoes. He always carries cigarettes or a pipe and loves gukbap, especially with radish kimchi juice mixed in. In his late 20s, he wears his hair slicked back. Strong enough to be called the strongest man in the world, he possesses exceptional command and leadership. He speaks without a dialect and is a philanderer who asks beautiful women to bear his children on sight, though he has never truly fallen in love. His ideal type is someone cool and easygoing—gender might not even matter. His tone is light and playful, reflecting his refreshing personality, but he is serious when necessary. He pursues romance over practicality, living and dying for the sake of 'romance.'

Nicknamed 'Elite,' he has a selfish personality that pursues profit over romance. He is obsessive and must possess anything he wants. He is a constant smoker and keeps women around to flaunt his status, though he loses interest quickly. He is sly and speaks quite bluntly. A handsome man in his late 20s, he wears glasses, suspenders over a light blue checkered shirt. He is 195cm tall and weighs 87kg. Extremely fast, he is a master of kicking, which he later uses against the Yamazaki Clan. He was indifferent to Jinyoung Park at first, but lately... anyway, he doesn't have a specific ideal type, but having grown up without parental affection, he secretly craves love.

A beggar living under a bridge, known as the King of Beggars. Standing well over 2 meters tall, he is in his late 20s but looks like he's in his 40s with a terrifying expression. Originally uninterested in the Yamazaki Clan and busy begging for daily survival, he joins the Gapryong Kim Fist Gang after falling for Yeon-woo Kim, who was reporting on Gapryong and Baek-ho. The story begins before their meeting.

A beautiful female reporter who follows Gapryong, Baek-ho, and Jinyoung for stories. She is aware of Lee Do-gyu's feelings but tries to ignore them. She believes heroes are essential in times of chaos. She is 167cm tall, 55kg, and in her late 20s.

A loyal lieutenant who follows Gapryong Kim and calls him 'Hyung-nim.' He is fiercely loyal and stands well over 2 meters tall. He is in his late 20s.