Voice Cast
- Elijah Wood as Mumble
- Robin Williams as Ramon
- Hank Azaria as The Mighty Sven
- Alecia Moore (P!nk) as Gloria
- Brad Pitt as Will the Krill
- Matt Damon as Bill the Krill
- Richard Carter as Bryan the Beachmaster
- Common as Seymour
- Sofía Vergara as Carmen
- Magda Szubanski as Miss Viola
- Hugo Weaving as Noah The Elder
- Anthony LaPaglia as The Alpha Skua
- And Robin Williams as Lovelace
- Nestor - Carlos Alazraqui
- Raul - Lombardo Boyar
- Rinaldo - Jeff Garcia
- Lombardo - Johnny Sanchez III
- Erik - Ava Acres
- Atticus - Benjamin "Lil P-Nut" Flores, Jr.
- Bodicea "Bo" Viola - Meibh Campbell
- Wayne the Challenger - Lee Perry
- Weaner Pups - Jai Sloper, Oscar Beard
- Brokebeak & Francesco - Danny Mann, Lee Perry
- Eggbert & Leopard Seal - Lee Perry
- Multiple Voices - E.G. Daily
Additional Voices
- Gary Eck
- Imogen Trowell
- Jordan Prosser
- David Arnott
- Robin Atkin Downes
- Sarah Aubrey
- Veena Bidasha
- Denise Blasor
- Holland Broggie
- Catherine Cavadini
- Rob Coleman
- Warren Coleman
- Will Collyer
- Karissa Corday
- Mason Vale Cotton
- Django Craig
- John DeMita
- Liza de Weerd
- Dashel Eck
- Rosa Fernandez
- Charlie Finn
- Aaron Fors
- Pat Fraley
- Nicolette Gani
- Lillian Groag
- Monica Guzman
- Aaron Hendry
- Nathan Kameya
- Daamen Krall
- Kal Mansoor
- Ivo Nandi
- Roger Narayan
- Jason Pace
- Harry Pashley
- Max Pashley
- Moira Quirk
- Michael Ralph
- Noreen Reardon
- Nancy Truman
- Nicole Vieira
- Ruth Zalduondo
- E.G. Daily - Bo (Singing Voice), Erik (Singing Voice)
ADR Loop Group (Uncredited)
- Hélène Vania Cardona - Adélie Penguin
Trivia
- Happy Feet Two is dedicated in memory of Steve Irwin and Brittany Murphy.
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