Chloë Grace Moretz Young Penny (voice)
John Travolta Bolt (voice)
Malcolm McDowell Dr. Calico (voice)
Tara Strong Additional Voices (voice)
Jeff Bennett Lloyd (voice)
John DiMaggio Saul (voice)
Grey DeLisle Penny's Mom (voice)
Phil LaMarr Additional Voices (voice)
Diedrich Bader Veteran Cat (voice)
Miley Cyrus Songs, Penny (voice)
Nick Swardson Blake (voice)
John Lasseter Executive Producer
Randy Poffo Thug (voice)
Kari Wahlgren Mindy Parker (voice)
Byron Howard Director
Dan Fogelman Screenplay, Billy (voice)
John Powell Original Music Composer
Greg Germann The Agent (voice)
Sam Marin Animation
Stephen J. Anderson Additional Voices (voice)
Brian Stepanek Martin (voice)
Scott Menville Additional Voices (voice)
Chris Williams Additional Voices (voice), Director, Screenplay
Daran Norris Louie (voice)
Terri Douglas Additional Voices (voice)
Clay Kaytis Supervising Animator
Jenny Lewis Assistant Director (voice)
James Lipton The Director (voice)
Randy Thom Sound Re-Recording Mixer, Sound Designer
Tom MacDougall Music Supervisor
Ronn Moss Dr. Forrester (voice)
Nathan Greno Additional Voices (voice)
Susie Essman Mittens (voice)
Anne Lockhart Additional Voices (voice)
J.P. Manoux Tom (voice)
David Cowgill Additional Voices (voice)
Joe Whyte Modeling, Additional Voices (voice)
Earl Ghaffari Music Editor
Paul Pape Additional Voices (voice)
Mark Walton Rhino (voice)
David E. Fluhr Sound Re-Recording Mixer
Clark Spencer Producer
Jackie Gonneau Additional Voices (voice)
Ralph Zondag Animation
Brian Kesinger Layout
June Christopher Additional Voices (voice)
Adam Dykstra Animation
Pepper Sweeney Additional Voices (voice)
John Kahrs Animation
Frank E. Eulner Supervising Sound Editor
Sean Donnellan Penny's TV Dad (voice)
Patrick Osborne Animation
Jonathan Nichols-Navarro Additional Voices (voice)
J.R. Grubbs Sound Effects Editor
Germaine Franco Orchestrator
Chris Montan Executive Music Producer
Nik Ranieri Animation
Holly Kaneko Additional Voices (voice)
Joe Oh Animation
Leff Lefferts Sound Design Assistant
Jin Kim Character Designer
Randy Kerber Orchestrator
Pete Anthony Orchestrator
Cinzia Angelini Animation
Bob Davies Animation
Scott Guitteau Sound Effects Editor
Hyrum Virl Osmond Animation
Rick Moore Layout
Alex Kupershmidt Animation
John W. Wheeler Assistant Editor
Jim Likowski Foley Editor
Darrin Butters Animation