UFC

Tito Ortiz

"Hummington Beach Bad Boy"

Chuck Liddell

"Ice Man"

Diego Sanchez

"Nightmare"

Rashad Evans

"Sugar"

Rajon Rondo

(This has nothing to do with UFC) Got 18 rebounds against Orlando or Cavs in 2009/10 playoffs... (Override if you feel that the question is unfair or wrong)

Shane Carwin

In March 2010 had his 12th MMA fight/12th Knockout and got a title shot at Brock Lesnar

Royce Gracie

UFC 1 champion

BJ Penn

Been Champion in Welter weight and Light weight

Randy Colture

Been Heavyweight Champion and Lightheavyweight Champion

Anderson Silva

Best pound for pound UFC fighter

Frank Mir

First person to beat Brock Lesnar and he broke Tim Sylvia's arm

Brock Lesnar

Former WWE star

George St-Pierre

GSP

Quinton Jackson

Quoted "There's gonna be a Black on Black crime"

Forrest Griffin

Won the first Ultimate Fighter in the Light Heavy weight division