Chloë Grace Moretz Young Penny (voice)
John Travolta Bolt (voice)
Grey DeLisle Penny's Mom (voice)
Tara Strong Additional Voices (voice)
Malcolm McDowell Dr. Calico (voice)
John DiMaggio Saul (voice)
J.P. Manoux Tom (voice)
Jeff Bennett Lloyd (voice)
Scott C. Lemmer Animation
Miley Cyrus Songs, Penny (voice)
Scott Menville Additional Voices (voice)
Diedrich Bader Veteran Cat (voice)
Greg Germann The Agent (voice)
Kari Wahlgren Mindy Parker (voice)
Terri Douglas Additional Voices (voice)
John Lasseter Executive Producer
Randy Thom Sound Re-Recording Mixer, Sound Designer
J.R. Grubbs Sound Effects Editor
John W. Wheeler Assistant Editor
Brian Stepanek Martin (voice)
K. C. Roeyer Animation
Nick Swardson Blake (voice)
Dan Fogelman Screenplay, Billy (voice)
Phil LaMarr Additional Voices (voice)
David E. Fluhr Sound Re-Recording Mixer
Byron Howard Director
Daran Norris Louie (voice)
Daniel Kaz Additional Voices (voice)
Mark Anthony Austin Supervising Animator
Susie Essman Mittens (voice)
Anne Lockhart Additional Voices (voice)
Jenny Lewis Assistant Director (voice)
Chris Williams Additional Voices (voice), Director, Screenplay
John Wong Animation
Doug Bennett Animation Supervisor
Pepper Sweeney Additional Voices (voice)
John Powell Original Music Composer
Randy Poffo Thug (voice)
Ronn Moss Dr. Forrester (voice)
David Cowgill Additional Voices (voice)
Nathan Greno Additional Voices (voice)
Tom MacDougall Music Supervisor
June Christopher Additional Voices (voice)
Sam Marin Animation
Curtis A. Koller Casting Director
Jim Likowski Foley Editor
Ethan Hurd Animation
Paul Pape Additional Voices (voice)
Sean Donnellan Penny's TV Dad (voice)
James Lipton The Director (voice)
Pete Anthony Orchestrator
Stephen J. Anderson Additional Voices (voice)
Mark Walton Rhino (voice)
Chris Montan Executive Music Producer
Scott Guitteau Sound Effects Editor
Hyrum Virl Osmond Animation
Jackie Gonneau Additional Voices (voice)
Brian Kesinger Layout
Tom Carlson Music Editor
Holly Kaneko Additional Voices (voice)
Frank E. Eulner Supervising Sound Editor
Earl Ghaffari Music Editor
Bill Perkins Animation Manager, Visual Development
Dick Zondag Animation
James Finn Visual Development
Jin Kim Character Designer
Marshall Winn Dialogue Editor
Rick Moore Layout
Clay Kaytis Supervising Animator
Renato Dos Anjos Supervising Animator
James Baker Animation
Lino DiSalvo Vinnie (voice), Supervising Animator