(in credits order)
- Akio Ôtsuka(voice)
- Jean Simmons(English version) (voice)
- Christian Bale(English version) (voice)
- Lauren Bacall(English version) (voice)
- Blythe Danner(English version) (voice)
- Emily Mortimer(English version) (voice)
- Josh Hutcherson(English version) (voice)
- Billy Crystal(English version) (voice)
- Jena Malone(English version) (voice)
- Crispin Freeman(English version) (voice)
- Mark Silverman(English version) (voice)
- Mari Devon(English version) (voice)
- Liliana Mumy(English version) (voice)
- Carlos Alazraqui(English version) (voice)
- Newell Alexander(English version) (voice)
- Rosemary Alexander(English version) (voice)
- Julia Barnett(English version) (voice)
- Susanne Blakeslee(English version) (voice)
- Leslie Carrara-Rudolph(English version) (voice) (as Leslie Carrara)
- Mitch Carter(English version) (voice)
- David Cowgill(English version) (voice)
- Holly Dorff(English version) (voice)
- Moosie Drier(English version) (voice)
- Ike Eisenmann(English version) (voice) (as Iake Eissinmann)
- Will Friedle(English version) (voice)
- Bridget Hoffman(English version) (voice)
- Richard Steven Horvitz(English version) (voice) (as Richard Horvitz)
- Sherry Hursey(English version) (voice)
- Joel McCrary(English version) (voice)
- Edie Mirman(English version) (voice)
- Kristen Rutherford(English version) (voice)
- Warren Sroka(English version) (voice)
Rest of cast listed alphabetically
- Dee Bradley Baker(English version) (voice)
- São José Correia(Portuguese version) (voice)
- Victor Emanuel(Portuguese version) (voice)
- Albano Jerónimo(Portuguese version) (voice)
- Márcia Leal(Portuguese version) (voice)
- Joana Seixas(Portuguese version) (voice)
- Shigeyuki Totsugi(voice) (as Shigeyuki Sato)
- Ken Yasuda(voice)
- Daran Norris(English version) (voice) (uncredited)
