WEC 17: Halloween Fury 4 was a mixed martial arts event promoted by World Extreme Cagefighting on October 14, 2005 at the Tachi Palace Hotel & Casino in Lemoore, California. A light heavyweight tournament was held with the winner being crowned the champion and given a deal with the UFC.
| Actor | Role |
|---|---|
| SScott SmithSelf | Self |
 Tait FletcherSelf | Self |
 Ricco RodriguezSelf | Self |
| JJimmy AmbrizSelf | Self |
 Lavar JohnsonSelf | Self |
| CCorey SalterSelf | Self |
 Mike PyleSelf | Self |
| BBret BergmarkSelf | Self |
 Gabe RuedigerSelf | Self |
| SSam WellsSelf | Self |
 Poppies MartinezSelf | Self |
| RRobert BreslinSelf | Self |
 Vernon WhiteSelf | Self |
| AAlex StieblingSelf | Self |
 Cole EscovedoSelf | Self |
| JJoe MartinSelf | Self |
| JJustin LevensSelf | Self |
| JJorge OliveiraSelf | Self |
 Antonio BanuelosSelf | Self |
| EEd TomaselliSelf | Self |
 Tim McKenzieSelf | Self |
| GGil CastilloSelf | Self |
| SSteve RamirezSelf | Self |
 Shane CarwinSelf | Self |
| CCarlton JonesSelf | Self |
| KKenny EntoSelf | Self |
| CCharles PriceSelf | Self |
| AAndrew MartinezSelf | Self |
| JJimmy DexterSelf | Self |