Director: Jorge Blanco
When Earth astronaut Capt. Chuck Baker arrives on Planet 51 -- a world reminiscent of American suburbia circa 1950 -- he tries to avoid capture, recover his spaceship and make it home safely, all with the help of an empathetic little green being.
Justin Long
Lem (voice)
Dwayne Johnson
Chuck Baker (voice)
Jessica Biel
Neera (voice)
Seann William Scott
Skiff (voice)
Gary Oldman
General Grawl (voice)
John Cleese
Professor Kipple (voice)
Freddie Benedict
Eckle (voice)
Alan Marriott
Glar (voice)
Mathew Horne
Soldier #1 (voice)
James Corden
Soldier #2 (voice)
Alan Cumming
Alien Mailman (voice)
Frank Welker
Ripley / Rover (voice)
Jim Cummings
Lem's Dad (voice)
Renée Zellweger
Lem's Mom (voice)
Candi Milo
Teacher (voice)
Lewis Macleod
Additional Voices (voice)
Rupert Degas
Additional Voices / Chief Gorlock (voice) (uncredited)
Rebecca Front
Additional Voices (voice)
Vincent Marzello
Additional Voices (voice)
Emma Tate
Additional Voices (voice)
Justin Long
Lem (voice)
Dwayne Johnson
Chuck Baker (voice)
Jessica Biel
Neera (voice)
Seann William Scott
Skiff (voice)
Gary Oldman
General Grawl (voice)
John Cleese
Professor Kipple (voice)
Freddie Benedict
Eckle (voice)
Alan Marriott
Glar (voice)
Mathew Horne
Soldier #1 (voice)
James Corden
Soldier #2 (voice)
Alan Cumming
Alien Mailman (voice)
Frank Welker
Ripley / Rover (voice)
Jim Cummings
Lem's Dad (voice)
Renée Zellweger
Lem's Mom (voice)
Candi Milo
Teacher (voice)
Lewis Macleod
Additional Voices (voice)
Rupert Degas
Additional Voices / Chief Gorlock (voice) (uncredited)
Rebecca Front
Additional Voices (voice)
Vincent Marzello
Additional Voices (voice)
Emma Tate
Additional Voices (voice)
Justin Long
Lem (voice)
Dwayne Johnson
Chuck Baker (voice)
Jessica Biel
Neera (voice)
Seann William Scott
Skiff (voice)
Gary Oldman
General Grawl (voice)
John Cleese
Professor Kipple (voice)
Freddie Benedict
Eckle (voice)
Alan Marriott
Glar (voice)
Mathew Horne
Soldier #1 (voice)
James Corden
Soldier #2 (voice)
Alan Cumming
Alien Mailman (voice)
Frank Welker
Ripley / Rover (voice)
Jim Cummings
Lem's Dad (voice)
Renée Zellweger
Lem's Mom (voice)
Candi Milo
Teacher (voice)
Lewis Macleod
Additional Voices (voice)
Rupert Degas
Additional Voices / Chief Gorlock (voice) (uncredited)
Rebecca Front
Additional Voices (voice)
Vincent Marzello
Additional Voices (voice)
Emma Tate
Additional Voices (voice)