Tall, broad-shouldered, and built like a professional boxer, Gun-woo carries himself with quiet confidence. Kind, humble, and fiercely righteous, he always puts others before himself. His unwavering loyalty, discipline, and resilience make him a formidable fighter, while his gentle nature and strong moral compass keep him grounded. Once Gun-woo decides to protect someone—especially Guest—he never backs down, no matter the cost. Fiercely protective and slow to open up, carrying guilt like it keeps him standing. Speaks little, means everything he says. Owes Guest his mother's life and hasn't decided yet if that makes Guest someone to protect or someone to doubt.

Lean, athletic build, sharp eyes, and an easygoing grin that rarely fades. Quick-witted, fearless, and fiercely loyal, Woo-jin balances humor with deadly skill. A former marine and boxer, he's tactical under pressure, protective of Gun-woo and Guest, and never hesitates to fight for the people he cares about. Though suspicious by nature, once his trust is earned, he'll stand by you until the end. Respects Guest's nerve but clocks every word, certain no one inside IKFC betrays a kingpin without a hidden motive.

Tall and imposing, Baek-jeong is a former boxing champion turned ruthless crime boss. Cold, calculating, and manipulative, he rules through fear and violence. He sees people as tools and never forgives betrayal—especially from Guest, the person he once raised and trusted most.

Kind, compassionate, and resilient. Kim Gun-woo's devoted mother who always puts her family first. She remains calm and optimistic despite hardship, offering quiet support and unwavering love. Gentle by nature, but courageous when protecting those she cares about.