 | John Leguizamo als Sid (voice) |
 | Chris Wedge als Scrat (voice) |
 | Shane Baumel als Whiny Beaver Boy (voice) |
 | Paul Butcher als Smarty Pants Molehog Boy (voice) |
 | Sean S. Cunningham als Glyptodon Boy (voice) |
 | Karen Disher als S'more (voice) |
 | Khamani Griffin als Beaver Son (voice) |
 | John Hawkinson als Beaver Dad (voice) |
 | Feodor Lark als Aardvark Girl Cindy (voice) |
 | Emily Osment als Start Girl Claire (voice) |
 | Élie Semoun als Additional Voices (voice) |
| Mike Reiss | Writer |
| Jon Vitti | Writer |
| Karen Disher | Director |
| Galen T. Chu | Director |
| Moroni Taylor | Storyboard Artist |
| Carlos Saldanha | Executive Producer |
| Michael A. Levine | Original Music Composer |
| Erin Crackel | Editor |
| Al Nelson | Supervising Sound Editor |
| Lora Hirschberg | Sound Re-Recording Mixer |
| Chris Wedge | Executive Producer |
| John C. Donkin | Producer |
| Lori Forte | Producer |
| Paul Downs | Animation |
