WEC 18: Unfinished Business was a mixed martial arts event promoted by World Extreme Cagefighting on January 13, 2006 at the Tachi Palace Hotel & Casino in Lemoore, California.
| Actor | Role |
|---|---|
| BBrian OlsenSelf | Self |
 Lavar JohnsonSelf | Self |
 Vernon WhiteSelf | Self |
| JJason GuidaSelf | Self |
 Billy EvangelistaSelf | Self |
| RRyan HealySelf | Self |
 Casey OlsonSelf | Self |
| JJoe MartinSelf | Self |
 Mike PyleSelf | Self |
 Shonie CarterSelf | Self |
| SScott SmithSelf | Self |
| JJustin LevensSelf | Self |
 Chris LytleSelf | Self |
 Savant YoungSelf | Self |
| RRich CrunkiltonSelf | Self |
| NNick ErtlSelf | Self |
| DDevin ColeSelf | Self |
 Mike KyleSelf | Self |
| JJosh GreenSelf | Self |
| RRafael del RealSelf | Self |