- Craig Anton - City Council Member (voice)
- Michael Q. Schmidt - Joy Peters (voice)
- Ron Lynch - City Council Member (voice)
- Stephanie Courtney - Joy Peters / Renee the Receptionist (voice)
- John C. Reilly - John (voice)
- Patton Oswalt - Zynx (voice)
- Brian Posehn - Gibbons (voice)
- Zach Galifianakis - Dr. Vickerson (voice)
- Edward Herrmann - Benjamin Kaplan (voice)
- Michael Ian Black - Dr. Ian Black (voice)
- Kyle Gass - Trapper Kyle (voice)
- Gary Busey - Coach Red Harris (voice)
- Sean Hayes - Tour Guide (voice)
- Dustin Diamond - Self (voice)
- Fred Willard - Garry Friendly (voice)
- Maria Bamford - Home Shopping Woman / Sandy (voice)
- Sir Mix-a-Lot - Self (voice)
- Robert Loggia - Lew Petersen (voice)
- Tom Kenny - Saxman (voice)
- Brian Doyle-Murray - Bernie Fusterillio (voice)
- Bob Odenkirk - Announcer (voice)
- Bob Odenkirk - Bradley (voice)
- Bob Odenkirk - Sandleman (voice)
- Bob Odenkirk - Townie (voice)
- Bob Odenkirk - WizZard (voice)
- Bob Odenkirk - Animatronic Hitler (voice)
- Bob Odenkirk - Dr. Sandy Winfield (voice)
- Bob Odenkirk - Bartender / Crazy Pete / Tiny Tim (voice)
- Bob Odenkirk - Rescue Worker / Fishanelli's Spokesman (voice)
- Bob Odenkirk - Commercial Announcer (voice)
- Bob Odenkirk - WizZard (voice) (uncredited)
- Bob Odenkirk - Slimed (voice)
- Bob Odenkirk - Mike Foxx / Mysterious Drifter (voice)
- Bob Odenkirk - Phil Prebscott (voice)
- Bob Odenkirk - Giftshop Clerk (voice)
- Bob Odenkirk - Flaxamax Spokesman (voice)
- Bob Odenkirk - Magic Man Gregory (voice)
- Bob Odenkirk - Career Day Singer (voice)
- Bob Balaban - Walt Pickle (voice)
- Michael Cera - Scrotch (voice)
- Paul Reubens - Paul (voice)
- Todd Barry - Saul (voice)
- John Ennis - Factory Owner (voice)
- Scott Chernoff - Dr. Victor Peppar (voice)
- Louie Anderson - Mining Team of Louie Andersons (voice)
- Michael Hitchcock - Durango Bolo Salesman (voice)
- Judd Hirsch - Prisoner (voice)
- Garry Shandling - Captain Pat Lewellen (voice)
- Janeane Garofalo - Self (voice)
- Dave Foley - Dr. Dave Foley (voice)
- David Pires - Roy Teppert (voice)
- Jordan Cohen - Terry (voice)
- Davin Wood - (voice)
- Mark Womack - Brandon (voice)
- Mark Womack - Kid Caught in Bear Trap (voice)
- Doug Lussenhop - Man in a Tuba Suit (voice)
- Fred Tatasciore - (voice)
- Mike Carlucci - (voice)
- Tom Scharpling
- Dino Stamatopoulos
- Jon Wurster
- Eric Wareheim
- Bob Odenkirk
- DJ Paul
- Jeremy Rubin
- Jonathan Krisel
- CK Gillen
- Matt Harrigan
- Davin Wood
- Tim Heidecker
Gary Busey interpreta a Coach Red Harris (voice) en la serie.
Robert Loggia hace el papel de Lew Petersen (voice).
John C. Reilly interpreta a John (voice) en la serie.
Jeff Goldblum interpreta a Bill Joel (voice) en la serie.
David Cross hace el papel de Todd (voice).
Tim Heidecker interpreta a Tom Peters / Jan Skylar (voice) en la serie.
Eric Wareheim interpreta a The Mayor / Wayne Skylar (voice) en la serie.
Brian Doyle-Murray hace el papel de Bernie Fusterillio (voice).
Craig Anton hace el papel de City Council Member (voice).
Michael Q. Schmidt interpreta a Joy Peters (voice) en la serie.
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