Born to a Korean father and Vietnamese mother. Bon-fuu's parents met during the Vietnam war when his father was a soldier who saved his mother as a child from getting shot by Korean soldiers. Later he felt guilty and returned to Vietnam to apologize.
Bon-fuu was trained by his father and learned martial arts and when his father died, Bon-fuu went to South Korea and fell in love with the Vietnamese girl Hae-yi. Their relationship was sadly short lived as she committed suicide shortly after when a bunch of Korean men tried to rape her one day she was home alone. This caused Bon-fuu to join the Mafia. His status is currently unknown after he defeated Ken.