Melvin Paul Guillard, Jr. (born March 30, 1983) is an American mixed martial artist who competes in the Middleweight division. Guillard most notably competed in the Lightweight division of the Ultimate Fighting Championship (UFC), Bellator MMA and World Series of Fighting. He debuted in the company on The Ultimate Fighter 2 television series, losing to Josh Burkman by decision in the first Welterweight elimination bout. Guillard currently holds the UFC record for most TKO/KO victories (eight) in the Lightweight division, surpassing the previous record held by Multi-Divisional Champion B.J. Penn with his knockout of Shane Roller at UFC 132. He again extended this record in his knockout victory over Mac Danzig at UFC on Fox: Johnson vs. Moraga.