John Travolta character Bolt (voice)
Miley Cyrus character Penny (voice)
Anne Lockhart character (voice)
Greg Germann character The Agent (voice)
Malcolm McDowell character Dr. Calico (voice)
Nick Swardson character Blake (voice)
Diedrich Bader character Veteran Cat (voice)
Chloë Grace Moretz character Young Penny (voice)
Susie Essman character Mittens (voice)
Mark Walton character Rhino (voice)
James Lipton character The Director (voice)
J.P. Manoux character Tom (voice)
Dan Fogelman character Billy (voice)
Kari Wahlgren character Mindy Parker (voice)
Randy Mario Poffo character Thug (voice)
Ronn Moss character Dr. Forrester (voice)
Grey DeLisle character Penny's Mom (voice)
Sean Donnellan character Penny's TV Dad
Lino DiSalvo character Vinnie
Todd Cummings character Joey
Tim Mertens character Bobby
Brian Stepanek character Martin
Jeff Bennett character Lloyd
Daran Norris character Louie
John DiMaggio character Saul
Jenny Lewis character Assistant Director
Phil LaMarr character (voice)
June Christopher character (voice)
Christin Ciaccio Briggs character (voice)
David Cowgill character (voice)
Terri Douglas character (voice)
Jackie Gonneau character (voice)
Nathan Greno character (voice)
Forrest Iwaszewski character (voice)
Holly Kaneko character (voice)
Daniel Kaz character (voice)
Dara McGarry character (voice)
Scott Menville character (voice)
Jonathan Nichols character (voice)
Paul Pape character (voice)
Lynwood Robinson character (voice)
Karen Ann Ryan character (voice) (as Karen Ryan)
Tara Strong character (voice)
Pepper Sweeney character (voice)
Joe Whyte character (voice)
Chris Williams character (voice)
