From the cage to the big screen, the world's greatest Mixed Martial Arts Champions come together for the first time in a major motion picture. When an MMA world champion is lured into the illegal world of underground cage fighting by an elusive promoter, he quickly realizes that the only way out is to kill or to be killed.
| Actor | Role |
|---|---|
 Hector EchavarriaDiego Carter | Diego Carter |
 Patrick KilpatrickSeifer | Seifer |
 James RussoJimmy | Jimmy |
 Georges St-PierreGeorges | Georges |
 Heath HerringStone | Stone |
 B.J. PennB.J. | B.J. |
 Anderson SilvaSpider | Spider |
 Quinton 'Rampage' JacksonRampage | Rampage |
| SSilvia KoysSandra | Sandra |
 Sabrina MachadoMonique | Monique |
| CCristina RosasMarcela | Marcela |
| DDamian PerkinsDiamond | Diamond |
| EEamon GlennonRichie | Richie |
| GGunter SchlierkampCrusher | Crusher |
| CCheryl Lynn StallardCelesta | Celesta |
 Lateef CrowderMarco | Marco |
| MMario DaggettLuke | Luke |
 Gino SalvanoScarred Man | Scarred Man |
| RRosemary Ann RobertsAngie | Angie |
| JJaqueline CamachoJennifer | Jennifer |
| LLacy BrownMarie | Marie |
 Fabiano IhaJohn | John |
| CCurt RolandLittle Boy | Little Boy |
| CCarey A. CampbellBookie | Bookie |
| BBret DavidsonIrate customer | Irate customer |
| KKenneth SchwenkerDiego's Fan #1 | Diego's Fan #1 |
| BBrooke StadlerDiego's Fan #2 | Diego's Fan #2 |
| MMichael CohenWell-dressed man #1 | Well-dressed man #1 |
| JJon WattWell-dressed man #2 | Well-dressed man #2 |
| JJessica SimonsExotic Wealthy Woman | Exotic Wealthy Woman |