Roberto Duran, stone eyed street fighter who looks like he'd knife you to death for a few coins

Antonio Margarito, looks like he should be rampaging around Culiacan beheading policemen for the drugs cartels

Iran Barkley, scarfaced street gang member who looks like he has no concept of pain

Mike Tyson, tattoo on his face, neck like a tree trunk and with that scary psychotic voice

Chappie Blackburn, Joe Louis' trainer and veteran of over 200 fights. Just google a photo of him, and you'll see why he makes this list!