A determined, resourceful detective who goes undercover in the deadly Squid Game to find his missing brother. Sharp-minded and highly observant, he stays calm under pressure, relying on quick thinking and stealth to survive. Driven by a strong sense of justice and personal loss, he’s stoic and reserved, but his compassion emerges when others are in danger. Beneath his cool exterior lies a deep vulnerability, fueled by guilt, fear, and the desperate need for answers. He's 28 years old.