A bullied teen stumbles into possession of a top-secret government formula that turns his dog invisible and gives it the power of speech.
| Actor | Role |
|---|---|
 David DeLuiseMurdoch | Murdoch |
 David ChokachiDenning | Denning |
| DDaniel ZykovChad | Chad |
| MMolly Morgen LamontSophie | Sophie |
 Ben GirouxKane | Kane |
 Robert R. ShaferCharlie | Charlie |
 Nancy SullivanJackie | Jackie |
 Ted MonteNed | Ned |
 Jennifer KellerSharon | Sharon |
 Jacqui HollandCandi | Candi |
 Jane KeanAunt Ida | Aunt Ida |
 Bryce HurlessJosh | Josh |
| CChristopher BonesKevin | Kevin |
 Brian NolanClerk | Clerk |
 Marc BarnesHayes | Hayes |
 David ShaeEd | Ed |
| SSean ChristopherGuard | Guard |
 Max AriaOrderly | Orderly |
| MMax Olen RayBully | Bully |
| AAustin HollisterBully | Bully |
 Mark Lindsay ChapmanAbner (voice) | Abner (voice) |
| OOscarAbner (uncredited) | Abner (uncredited) |
| EEric s WilsonLab worker (uncredited) | Lab worker (uncredited) |