Nestor (voice)
Raul (voice)
Rinaldo (voice) (as Jeff Garcia)
Lombardo (voice) (as Johnny Sanchez III)
Ramon / Lovelace (voice)
Mumble (voice)
Gloria (voice)
Memphis (voice)
Norma Jean (voice)
Noah the Elder (voice)
Baby Mumble (voice) (as E.G. Daily)
Miss Viola (voice)
Mrs. Astrakhan (voice)
Seymour (voice)
Baby Gloria (voice)
Baby Seymour (voice)
Boss Skua (voice)
Dino / Zoo Penguin (voice)
Vinnie (voice)
Frankie (voice)
Trev (voice)
Nev (voice) (as Nicholas McKay)
Kev (voice)
Barry / Live Action Cast (voice)
Elder / Zoo Penguin (voice)
Elder (voice)
Adélie Chica (voice)
Leopard Seal (voice)
Maurice / Other Voices (voice)
Michelle (voice)
Live Action Cast
Additional Voice (voice) (as Grant Albrecht)
Additional Voice (voice)
Additional Voice (voice) (as Ricky D'Shon Collins)
Additional Voice (voice) (as Scott E. Cox)
Additional Voice (voice) (as Spencer Ganus)
Additional Voices (voice)
Additional Voice (voice) (as Kyndell Rose)
Additional Voice (voice) (as Billy Williams)
Advisor to the Russian Diplomat (uncredited)