Elijah Wood as Mumble (voice)

Robin Williams as Ramon / Lovelace (voice)

Pink as Gloria (voice)

E. G. Daily as Erik (voice)

Johnny A. Sanchez as Lombardo (voice)

Lombardo Boyar as Raul (voice)

Sofía Vergara as Carmen (voice)

Common as Seymour (voice)

Hugo Weaving as Noah (voice)

Brad Pitt as Will (voice)

Matt Damon as Bill (voice)

Carlos Alazraqui as Nestor (voice)

Jeffrey Garcia as Rinaldo (voice)

Ava Acres as Erik (voice)

Benjamin Flores Jr. as Atticus (voice)

Meibh Campbell as Bo (voice)

Magda Szubanski as Miss Viola (voice)

Hank Azaria as Mighty Sven (voice)

Richard Carter as Bryan (voice)

Lee Perry as Wayne / Francesco / Eggbert / Leopard Seal (voice)

Jai Sloper as Weaner Pup (voice)

Oscar Beard as Weaner Pup (voice)

Anthony LaPaglia as Alpha Skua (voice)

Danny Mann as Brokebeak (voice)

Denise Blasor as Adelie Chica (voice)

Roger Narayan as Indian Penguin (voice)

Mason Cotton as Additional Voices (voice)

Joshua Rush as Additional Voice (voice)

Lillian Garrett-Groag as Additional Voices (voice)