Elenco - Planeta 51
Dwayne Johnson
Capt. Charles 'Chuck' Baker (voice)
Seann William Scott
Skiff (voice)
Jessica Biel
Neera (voice)
Justin Long
Lem / Rover (voice)
Gary Oldman
General Grawl (voice)
John Cleese
Professor Kipple (voice)
Alan Marriott
Glar (voice)
Freddie Benedict
Eckle (voice)
Mathew Horne
Soldier Vesklin (voice)
James Corden
Soldier Vernkot (voice)
Lewis Macleod
Additional Voices (voice)
Rupert Degas
Additional Voices / Chief Gorlock (voice)
Rebecca Front
Additional Voices (voice)
Vincent Marzello
Additional Voices (voice)
Emma Tate
Additional Voices (voice)
Pete Atkin
Additional Voices (voice)
Laurence Bouvard
Additional Voices (voice)
Brian Bowles
Additional Voices (voice)