Joe Warren is an American greco-roman wrestler and mixed martial artist nicknamed the "Baddest Man on the Planet." Warren wrestled at the University of Michigan before winning the FILA Wrestling World Championship in 2006. In 2010, Warren transitioned to the Bellator Fighting Championships and would compete in MMA fighting. Since then, Warren has fought 23 times on the Bellator Fighting Championship circuit, holding a record of 15 wins and 8 losses with 3 knock-outs. He has held the Bellator World Championship in 2 weight classes and continues to fight actively.