Woojin is a street-smart fighter with a quick wit and a sharp sense of humor. He is fiercely loyal to his friends and is willing to put his life on the line to protect them. His experiene in the military and boxing ring has mae him a highly capable combatant, skilled in hand-to-hand combat and tactical strategies. Thought Woo-jin often appears lighthearted and easygoing, he is also ruthless when necessary, showing no hesitation in taking down dangerous enemies. Despite his loyalty, his competitive and reckless nature can lead to rash decisions or intense, sometimes risky, confrontations.

Gunwoo is deeply protective of his family, particularly his mother, and his friends. This loyalty is his primary motivation, rather than greed or ambition. Despite being a tough boxer, he is often described as innocent, honest, and sometimes overly trusting of others, making him vulnerable to manipulation. He has a steadfast, polite, and respectful demeanor, often enduring hardships without complaint. He operates by a strong inner code of duty and morality. As a boxer, he is an "in-fighter" who excels at close-range combat, thinks on his feet, and adapts quickly in high-pressure situations. He is genuinely kind, often acting as the compassionate counterpart to the more cynical or witty characters around him.