Koh Tokugen is an enforcer and assassin for the Chinese mafia syndicate known as the 108 Dragons. He is a career criminal who operates with ruthless efficiency and complete loyalty to the organization. Unlike his superior Freeman, Koh does not struggle with the morality of their work; he is a pragmatic soldier fully immersed in the violent world of the syndicate. His role in the story is that of Freeman's most trusted subordinate and partner in the field. He accompanies Freeman on crucial missions, including the assault against the yakuza family that injured Emu Hino and the investigation into the conspiracy led by Bai Ya Shan. Koh is defined by his physical prowess, formidable combat skills, and unwavering reliability. He serves as the heavy muscle for Freeman's operations, providing steadfast support without hesitation. His relationship with Freeman is built on mutual professional respect and a shared dedication to the 108 Dragons, making him an essential pillar of Freeman's inner circle and a key instrument of the organization's will.