Bruce Willis
RJ (voice)
Garry Shandling
Verne (voice)
Steve Carell
Hammy (voice)
Wanda Sykes
Stella (voice)
William Shatner
Ozzie (voice)
Nick Nolte
Vincent (voice)
Thomas Haden Church
Dwayne (voice)
Allison Janney
Gladys (voice)
Eugene Levy
Lou (voice)
Catherine O'Hara
Penny (voice)
Avril Lavigne
Heather (voice)
Omid Djalili
Tiger (voice)
Sami Kirkpatrick
Bucky (voice)
Shane Baumel
Spike (voice)
Madison Davenport
Quillo (voice)
Paul Butcher
Skeeter (voice)
Zoe Randol
Mackenzie (voice)
Jessica DiCicco
Shelby (voice)
Debra Wilson
Debbie (voice)
Sean Bishop
Police Officer (voice)
Jeannie Elias
Janis (voice)
Kejon Kesse
Timmy (voice)
Sean Yazbeck
BBQ Barry (voice)
Geoffrey Pomeroy
Ranger (voice)
Joel McCrary
Dr. Dennis (voice)
Lee Bienstock
Lunch Table Larry (voice)
Brian Stepanek
Nugent the Dog (voice)
Steve Alterman
Additional Voices (voice)
Erin Lander
Additional Voices (voice)
Kirk Baily
Additional Voices (voice)
Jordan Orr
Additional Voices (voice)
Michaela Jill Murphy
Additional Voices (voice)
Michelle Ruff
Additional Voices (voice)
Nicholas Guest
Additional Voices (voice)
Greyson Spann
Additional Voices (voice)
David Hiller
Additional Voices (voice)
April Lawrence
Additional Voices (voice)
Bridget Hoffman
Additional Voices (voice)
Marcelo Tubert
Additional Voices (voice)
Sandy Holt
Additional Voices (voice)
Ariel Winter
Additional Voices (voice)
Talula Holt
Additional Voices (voice)