Wau a member of Black Units and is one of the seven Elite warriors called the Trumps. Like the others members, he comes from Duhanna. His main weapons are American fists which means he is an extremely close-ranged fighter. He fights for the first time against Mamoru, but was saved by Gara and Shidavra. The three catch him and delivers him to Gini, the leader of Trumps. He later fights against Aegis.