Patrick Warburton as Rock Slyde

Andy Dick as Bart

Rena Sofer as Sara

Elaine Hendrix as Judy Bee

Jason Alexander as Mailman Stan

Eric Roberts as Jake the Deliveryman

Lea Thompson as Master Bartologist

Terry Chen as David

Jerry Cantrell as Jerry

Brian Bosworth as The Friendly Pirate

Guillermo Rodriguez as Gary

Zac Kintner as Freak out Bartologist

William Brent as Young Rock (as Billy Unger)

Kristin Adams as Bartender