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Ray Romano as Manny (voice) John Leguizamo as Sid (voice) Denis Leary as Diego (voice) Goran Višnjić as Soto (voice) Jack Black as Zeke (voice) Cedric the Entertainer as Carl (voice) Stephen Root as Frank / Start (voice) Diedrich Bader as Oscar (voice) Alan Tudyk as Lenny / Freaky Mammal / Dab (voice) Lorri Bagley as Jennifer (voice) Jane Krakowski as Rachel (voice) P.J. Benjamin as Dodo (voice) Josh Hamilton as Dodo / Aardvark (voice) Denny Dillon as Glyptodon (voice) Mitzi McCall as Glyptodon (voice) Tara Strong as Baby Start (voice) Chris Wedge as Dodo / Scrat (voice) Kristen Johnston as Sylvia (voice) (uncredited) Darin De Paul as Additional Voices (voice) (uncredited) Dann Fink as Dodo (voice) (uncredited) Patrick Pinney as Various Mammals (uncredited) Phil Proctor as Various Mammals (uncredited)

Lori Forte Producer Chris Wedge Director Michael J. Wilson Screenplay David Newman Original Music Composer Chris Meledandri Executive Producer Galen T. Chu Animation Galen T. Chu Additional Writing Michael J. Wilson Story Mike Thurmeier Additional Writing Craig Berkey Sound Effects Editor José Antonio Macías Translator Carlos Saldanha Co-Director Everett Downing Jr. Animation Paul Massey Sound Re-Recording Mixer Peter de Sève Character Designer Bruce Winant ADR Voice Casting Doug Hemphill Sound Re-Recording Mixer Moroni Taylor Storyboard Artist David Newman Conductor Daisuke "Dice" Tsutsumi Matte Painter David Silverman Story Consultant Enrico Casarosa Storyboard Artist Jørgen Klubien Storyboard Artist