WEC 12: Halloween Fury 3 was a mixed martial arts event promoted by World Extreme Cagefighting on October 21st, 2004 at the Tachi Palace Hotel & Casino in Lemoore, California. The card featured many future superstars such as Jason "The Punisher" Lambert, Nate Diaz, Brad Imes, Chris "Lights Out" Lytle, "The Sandman" James Irvin, Joe "Diesel" Riggs, Chael Sonnen, and MMA legend "Mr. International" Shonie Carter. The main event saw Doug Marshall take on Carlos Garcia.
| Actor | Role |
|---|---|
| DDoug MarshallSelf | Self |
| CCarlos GarciaSelf | Self |
 Shonie CarterSelf | Self |
| JJody PoffSelf | Self |
 Chael SonnenSelf | Self |
| AAlex StieblingSelf | Self |
 Joe RiggsSelf | Self |
| IIsidro GonzalezSelf | Self |
 James IrvinSelf | Self |
| HHoussain OushaniSelf | Self |
 Poppies MartinezSelf | Self |
| JJoe MartinSelf | Self |
 Tosh CookSelf | Self |
| RRafael del RealSelf | Self |
 Chris LytleSelf | Self |
| JJ.T. TaylorSelf | Self |
 Gabe RuedigerSelf | Self |
 Olaf AlfonsoSelf | Self |
 Mark WeirSelf | Self |
| WWill BradfordSelf | Self |
 Brad ImesSelf | Self |
| JJeremy FreitagSelf | Self |
| TTroy MillerSelf | Self |
| TTom OwensSelf | Self |
 Nate DiazSelf | Self |
| AAlejandro GarciaSelf | Self |
 Jason LambertSelf | Self |
 Matt HorwichSelf | Self |