Ray Romano character Manny (voice)
John Leguizamo character Sid (voice)
Denis Leary character Diego (voice)
Queen Latifah character Ellie (voice)
Seann William Scott character Crash (voice)
Josh Peck character Eddie (voice)
Jay Leno character Fast Tony (voice)
Will Arnett character Lone Gunslinger Vulture (voice)
Chris Wedge character Scrat (voice)
Peter Ackerman character Dung Beetle Dad (voice)
Caitlin Rose Anderson character Glypto Boy Billy / Beaver Girl (voice)
Connor Anderson character Rhino Boy / Beaver Boy (voice)
Joseph Bologna character Mr. Start (voice)
Jack Crocicchia character Elk Boy (voice)
Peter DeSève character Condor Chick (voice)
Ariel Winter character (voice)
Clea Lewis character Female Mini Sloth (voice)
Stephen Root character Aardvark Dad (voice)
Nicole DeFelice character Start Girl (voice)
Debi Derryberry character Diatryma Mom (voice)
Marshall Efron character Start Dad (voice)
Tom Fahn character Stu / Male Ox (voice)
Jason Fricchione character Molehog Grandpa / Shovelmouth Male (voice)
James Edmund Godwin character Traffic Vulture (voice)
George Jacobs character Beaver Dad (voice)
Brian Scott McFadden character Glyptodon (voice)
Jansen Panettiere character Shovelmouth Boy (voice)
Gregory Romano character Start Boy 1 (voice)
Matt Romano character Start Boy 2 (voice)
Carlos Saldanha character Dodo (voice)
Manoela Scarpa Saldanha character Molehog Kid 1 (voice)
Sofia Scarpa Saldanha character Molehog Kid 2 (voice)
Reyna Shaskan character Diego's Bird Girl (voice)
James Sie character Freaky Male (voice)
Cindy Slattery character Aardvark Mom (voice)
Mindy Sterling character Female Ox (voice)
Alex Sullivan character James (voice)
Renée Taylor character Mrs. Start (voice)
Alan Tudyk character Cholly (voice)
Claudia Besso character (voice)
Jess Harnell character (voice)
Madeleine Martin character (voice)
Sherry Lynn character (voice)
Mickie McGowan character Additional Voices (voice)
Emily Anderson character (voice)
Jack Angel character (voice)
Shane Baumel character (voice)
Bob Bergen character (voice)
Kyle J. Bogert character (voice)
Rodger Bumpass character (voice)
Paul Butcher character (voice)
Blanca Camacho character (voice)
John Cygan character (voice)
Jennifer Darling character (voice)
Olivia DeLaurentis character (voice)
Harrison Fahn character (voice)
Bill Farmer character (voice)
Crispin Freeman character Additional Voices (voice)
Tim Kirkpatrick character (voice)
David H. Kramer character (voice)
Danny Mann character (voice)
Laura Marano character (voice)
Matt McCarthy character (voice)
Laraine Newman character (voice)
Jan Rabson character (voice)
Zack Shada character (voice)
Thomas Sharkey character (voice)
Ross Simanteris character (voice)
Rachel Stand character (voice)
Spencer Lacey Ganus character (voice)
