
B.J. Penn
Jay Dee "B.J." Penn III is an American former professional mixed martial artist and 5th degree black belt Brazilian jiu-jitsu practitioner. A former UFC Lightweight Champion and UFC Welterweight Champion, he is the second of ten fighters in UFC history to win titles in multiple weight classes. Prior to his MMA career, Penn was known as the first non-Brazilian to win the World Jiu-Jitsu Championship at black belt level.