 Myles JeffreyT.J. Detweiler (voice) | T.J. Detweiler (voice) |
 Pamela AdlonSpinelli (voice) | Spinelli (voice) |
 Dabney ColemanPrincipal Prickley (voice) | Principal Prickley (voice) |
 Ashley JohnsonGretchen Grundler (voice) | Gretchen Grundler (voice) |
 Allyce BeasleyMiss Grotke (voice) | Miss Grotke (voice) |
 Rickey D'Shon CollinsVince LaSalle (voice) | Vince LaSalle (voice) |
 Jason DavisMikey Blumberg (voice) | Mikey Blumberg (voice) |
 Courtland MeadGus Griswald (voice) | Gus Griswald (voice) |
 Andrew LawrenceYounger T.J. (voice) | Younger T.J. (voice) |
| LLane ToranKing Bob (voice) | King Bob (voice) |
| KKlee BraggerDigger Sam (voice) | Digger Sam (voice) |
 April WinchellMiss Finster (voice) | Miss Finster (voice) |
 Rachel CraneAshley Q (voice) | Ashley Q (voice) |
 Ross MalingerOlder T.J. (voice) | Older T.J. (voice) |
 Danny Cooksey(voice) | (voice) |
 Jane Curtin(voice) | (voice) |
 Aria Noelle CurzonCornchip Girl (voice) | Cornchip Girl (voice) |
 E. G. DailyDigger #1 (voice) | Digger #1 (voice) |
 Miles Marsico(voice) | (voice) |
 Anndi McAfeeAshley A (voice) | Ashley A (voice) |
 Sam McMurrayLt. Griswald (voice) | Lt. Griswald (voice) |
| RRyan O'DonohueDigger Dave / Randall (voice) | Digger Dave / Randall (voice) |
| PPatricia Renna(voice) | (voice) |
 Justin ShenkarowGelman (voice) | Gelman (voice) |
 Michael ShulmanFrancis the Hustler Kid (voice) | Francis the Hustler Kid (voice) |
 Francesca Marie SmithUpside-Down Girl / Ashley T / Swinger Girl (voice) | Upside-Down Girl / Ashley T / Swinger Girl (voice) |
| AAaron Spann(voice) | (voice) |
 Kath SoucieHector / Cindy / Gus's Mom (voice) | Hector / Cindy / Gus's Mom (voice) |
 Tara StrongSpinelli's Doll (voice) | Spinelli's Doll (voice) |
 Erik von DettenErwin Lawson (voice) | Erwin Lawson (voice) |
