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