Ray Romano Manny (voice) John Leguizamo Sid (voice) Denis Leary Diego (voice) Queen Latifah Ellie (voice) Seann William Scott Crash (voice) Josh Peck Eddie (voice) Jay Leno Fast Tony (voice) Will Arnett Lone Gunslinger Vulture (voice) Chris Wedge Scrat (voice) Joseph Bologna Mr. Start (voice) Ariel Winter Additional Voices (voice) Clea Lewis Female Mini Sloth (voice) Stephen Root Aardvark Dad (voice) Debi Derryberry Diatryma Mom (voice) Marshall Efron Start Dad (voice) Jansen Panettiere Shovelmouth Boy (voice) Matt Romano Start Boy 2 (voice) Carlos Saldanha Dodo (voice) James Sie Freaky Male (voice) Mindy Sterling Female Ox (voice) Renée Taylor Mrs. Start (voice) Alan Tudyk Cholly (voice) Claudia Besso Additional Voices (voice) Madeleine Martin Additional Voices (voice) Sherry Lynn Additional Voices (voice) Mickie McGowan Additional Voices (voice) Jack Angel Additional Voices (voice) Shane Baumel Additional Voices (voice) Bob Bergen Additional Voices (voice) Rodger Bumpass Additional Voices (voice) Paul Butcher Additional Voices (voice) Blanca Camacho Additional Voices (voice) John Cygan Additional Voices (voice) Jennifer Darling Additional Voices (voice) Olivia DeLaurentis Additional Voices (voice) Harrison Fahn Additional Voices (voice) Laraine Newman Additional Voices (voice)