55. Matt Hughes
Bonafides From 2002-2012: Former UFC Welterweight Champion, 14-6-0 (5 KOs, 4 Submissions)
Half man, half ground-and-pounding tank, Hughes held the UFC Welterweight title for much of the first half of the Complex Decade. He has more than 50 MMA fights under his belt, and owns the record for most wins in UFC history, with 18. Yes, he's got a certain doofus deer-in-the-headlights look, but notice we're saying that from the safety of our blog hovel, and not to dude's face.