Duo Lon

Duo Lon is a member of the clan called Hizoku. He is the eldest son of the clan's leader, Ron. But his father betrayed the clan and Duo Lon's reputation was ruined inside his clan. He was now known as the "betrayer's son".

To restore his reputation he started working as an assassin, so that he can hunt down Ron and redeem himself by killing him. He then met Ash Crimson, who invited to join him in the King Of Fighters 2003 tournament alongside Shen Woo. He liked their company so he accepted the invitation.

He later found out Ash's true intentions and leaves the team. He joins Elisabeth Blanctorche and Benimaru Nikaido in the next tournament to teach his former team mate a lesson. He later disappeared when he sensed the presence of Ron.