 When Mamiya's brother, Kou, is slaughtered by the Fangs, Ken and Rei put aside their differences to annihilate the clan.Boss Fang manages to get a hold of Rei's missing sister, Airi, and takes Mamiya captive as well, hoping to use them as leverage against the two masters.In the 1986 movie, the Fang Clan appears as a rival gang who fights against Ken-Oh's army for their territory.