|Nicole Kidman||Norma Jean|
|Anthony LaPaglia||Boss Skua|
|E.G. Daily||Baby Mumble|
|Magda Szubanski||Miss Viola|
|Miriam Margolyes||Mrs. Astrakhan|
|Michael Cornacchia||Skua Bird|
|Johnny A. Sanchez||Lombardo|
Mumble, a young emperor penguin, lives in Antarctica. Like others of his kind, he needs to be able to sing to attract a mate, but he has a terrible voice. Instead, Mumble must express himself, and lure a female through his amazing talent for tap-dancing.