Wanderlei César da Silva , nicknamed "The Axe Murderer" and "Cachorro Louco" (Portuguese for "mad dog"), is a Brazilian / American mixed martial artist who has competed in Japan's Pride Fighting Championships and the American-based Ultimate Fighting Championship (UFC). He holds the record for the most wins, knockouts, title defenses, and longest winning streak in PRIDE history. He is the former PRIDE Middleweight Champion, and the 2003 PRIDE Middleweight Grand Prix Tournament Champion. He is currently signed with Rizin Fighting Federation and Bellator MMA.
