Spent his early adult life in and out of prison on various drug and robbery convictions; became the welterweight boxing champion of San Quentin
Got his start in show business by giving Eric Roberts boxing lessons for the movie Runaway Train (1985)
Was hired as a consultant on the movie Heat to make sure the bank robbery scenes looked authentic; was later given a role as a member of Robert De Niro's crew
Had a cameo in the Jonas Brothers 2008 music video "Burnin' Up
Visits high schools and detention centers to speak with at-risk kids and warn them against turning to drug use and crime
Has acted in numerous movies for director Robert Rodriguez, who is a distant cousin