Chloë Grace Moretz Young Penny (voice)
John Travolta Bolt (voice)
Tara Strong Additional Voices (voice)
Malcolm McDowell Dr. Calico (voice)
Grey DeLisle Penny's Mom (voice)
Jeff Bennett Lloyd (voice)
Miley Cyrus Songs, Penny (voice)
John DiMaggio Saul (voice)
Diedrich Bader Veteran Cat (voice)
John Lasseter Executive Producer
Kari Wahlgren Mindy Parker (voice)
Greg Germann The Agent (voice)
Byron Howard Director
Brian Stepanek Martin (voice)
Dan Fogelman Screenplay, Billy (voice)
Phil LaMarr Additional Voices (voice)
Nick Swardson Blake (voice)
Scott Menville Additional Voices (voice)
Pepper Sweeney Additional Voices (voice)
Daran Norris Louie (voice)
J.P. Manoux Tom (voice)
Chris Williams Additional Voices (voice), Director, Screenplay
John Powell Original Music Composer
Susie Essman Mittens (voice)
Anne Lockhart Additional Voices (voice)
Stephen J. Anderson Additional Voices (voice)
Jenny Lewis Assistant Director (voice)
Nathan Greno Additional Voices (voice)
Ronn Moss Dr. Forrester (voice)
Frank E. Eulner Supervising Sound Editor
Terri Douglas Additional Voices (voice)
David E. Fluhr Sound Re-Recording Mixer
Randy Thom Sound Re-Recording Mixer, Sound Designer
Mark Walton Rhino (voice)
Holly Kaneko Additional Voices (voice)
Jonathan Nichols-Navarro Additional Voices (voice)
June Christopher Additional Voices (voice)
Sam Marin Animation
Ralph Zondag Animation
Randy Poffo Thug (voice)
David Cowgill Additional Voices (voice)
Paul Pape Additional Voices (voice)
J.R. Grubbs Sound Effects Editor
Clay Kaytis Supervising Animator
James Lipton The Director (voice)
Pete Anthony Orchestrator
Renato Dos Anjos Supervising Animator
Brent W. Hall Post Production Supervisor
Tom MacDougall Music Supervisor
Patrick Osborne Animation
Nik Ranieri Animation
Mark Anthony Austin Supervising Animator
Dave Metzger Orchestrator
Darrin Butters Animation
Clark Spencer Producer
Jim Likowski Foley Editor
Amy Lawson Smeed Animation
Joe Whyte Modeling, Additional Voices (voice)
Cinzia Angelini Animation
Kelly Hoover Ester (voice)
Brian Kesinger Layout
Jackie Gonneau Additional Voices (voice)
Germaine Franco Orchestrator
John W. Wheeler Assistant Editor
John Kahrs Animation
Sean Donnellan Penny's TV Dad (voice)
Scott Guitteau Sound Effects Editor
Thomas Baker Layout
Adam Dykstra Animation
Alessandro Jacomini Sequence Leads
Joe Moshier Character Designer
Curtis A. Koller Casting Director