Bolt (voice)

John Travolta

Dr. Calico (voice)

Malcolm McDowell

Penny

Miley Cyrus

Mittens (voice)

Susie Essman

Rhino (voice)

Mark Walton

The Director

James Lipton

Blake (voice)

Nick Swardson

The Agent (voice)

Greg Germann

Veteran Cat (voice)

Diedrich Bader

Thug

Randy Savage

Young Penny (voice)

Chloë Grace Moretz

Additional Voices (voice)

Anne Lockhart

Tom (voice)

J.P. Manoux

Billy (voice)

Dan Fogelman

Mindy Parker (voice)

Kari Wahlgren

Dr. Forrester (voice)

Ronn Moss

Penny's Mom

Grey Griffin

Thug (voice)

Randy Poffo

Additional Voices (voice)

Joe Whyte

Additional Voices (voice)

Phil LaMarr

Additional Voices (voice)

Tara Strong

Penny's TV Dad (voice)

Sean Donnellan

Additional Voices (voice)

June Christopher

Vinnie (voice)

Lino DiSalvo

Additional Voices (voice)

Lynwood Robinson

Joey (voice)

Todd Cummings

Additional Voices (voice)

David Cowgill

Bobby (voice)

Tim Mertens

Additional Voices (voice)

Jackie Gonneau

Additional Voices (voice)

Paul Pape

Ester (voice)

Kelly Hoover

Additional Voices (voice)

Jonathan Nichols

Additional Voices (voice)

Nathan Greno

Additional Voices (voice)

Scott Menville

Martin (voice)

Brian Stepanek

Additional Voices (voice)

Dara McGarry

Holly Kaneko

Lloyd (voice)

Jeff Bennett

Additional Voices (voice)

Daniel Kaz

Louie (voice)

Daran Norris

Saul (voice)

John DiMaggio

Assistant Director (voice)

Jenny Lewis

Christian Tramitz

Additional Voices (voice)

Christin Ciaccio Briggs

Luisa Wietzorek

Additional Voices (voice)

Terri Douglas

Axel Stein

Vera Teltz

Borys Szyc

Additional Voices (voice)

Forrest Iwaszewski

Sonia Bohosiewicz

Tomasz Karolak

Wojciech Paszkowski

Krzysztof Stelmaszyk

Izabela Kuna

Additional Voices (voice)

Karen Ann Ryan

Additional Voices (voice)

Chris Williams

Additional Voices (voice)

Pepper Sweeney

Additional Voices (voice)

Stephen J. Anderson