Steve Zahn Runt of the Litter (voice)
Catherine O'Hara Tina - Alien Mom (voice)
Patrick Stewart Mr. Woolensworth (voice)
Joan Cusack Abby Mallard (voice)
Patrick Warburton Alien Cop (voice)
Wallace Shawn Principal Fetchit (voice)
Don Knotts Mayor Turkey Lurkey (voice)
Fred Willard Melvin - Alien Dad (voice)
Amy Sedaris Foxy Loxy (voice)
Zach Braff Chicken Little (voice)
Adam West Ace - Hollywood Chicken Little (voice)
Chris Edgerly Additional Voices (voice)
Scott Menville Additional Voices (voice)
Joe Grant In Memory Of
Harry Shearer Dog Announcer (voice)
Mona Marshall Additional Voices (voice)
Garry Marshall Buck Cluck (voice)
Nathan Kress Additional Voices (voice)
Terri Douglas Additional Voices (voice)
Mark Dindal Director, Morkubine Porcupine / Coach (voice), Story
Will Finn Hollywood Fish (voice)
David Reynolds Additional Dialogue, Other
Pat Fraley Additional Voices (voice)
Aaron Spann Additional Voices (voice)
Mark Kennedy Story, Hollywood Runt (voice), Head of Story
John Debney Original Music Composer
Joe Whyte Rodriguez / Acorn Mascot / Umpire (voice)
Earl Ghaffari Music Editor
Mark Walton Goosey Loosey (voice)
Mary Hidalgo Casting
David E. Fluhr Sound Re-Recording Mixer
Brian Kesinger Layout
Julianne Buescher Additional Voices (voice)
Ron Anderson Screenplay
Eddie Frierson Additional Voices (voice)
Peter Del Vecho Associate Producer
Matsune Suzuki Visual Development
Ian Gooding Art Direction
Jeff Sawyer Sound Effects Editor
Nik Ranieri Supervising Animator
Hi-Hat Choreographer
Jin Kim Animation
Christian P. Minkler Sound Re-Recording Mixer
Steve Bencich Screenplay
Jeff Carson Music Editor
Jen Rudin Casting
Dara McGarry Hollywood Abby (voice)
Randy Fullmer Producer
Allen Blaisdell Layout
Thomas Baker Layout
Doug Bennett Supervising Animator
Brittney Lee Harvey Additional Voices (voice)
Eamonn Butler Animation Supervisor
Kelly Hoover Mama Runt (voice)
Adam Kopald Sound Effects Editor
Vera Pacheco Animation
Kevin Geiger CG Supervisor
Robert L. Sephton Sound Designer, Supervising Sound Editor
Jim Harrison Music Editor
Sandra Tsing Loh Additional Dialogue
Dick Zondag Supervising Animator
Alessandro Jacomini Visual Development
Tony Smeed Supervising Animator
Matthew Jon Beck Casting
Thomas Cardone Visual Development
Doug Walker Layout
Leonard Robledo Visual Development
Adolph Lusinsky Visual Development
David Womersley Production Design
Rick Moore Layout
Matthew Josten Kirby - Alien Kid (voice)
Ron J. Friedman Screenplay