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Lem is the main protagonist alien on Planet 51. He’s a 16 year old high school student that also works at the local observatory, where one of his duties was being a docent to school kids taking field trips to the planetarium. His name is short for Lemon. He is voiced by Justin Long.
Planet 51 (2009) cast and crew credits, including actors, actresses, directors, writers and more.
Julián Romero. Learn more about the full cast of Planet 51 with news, photos, videos and more at TV Guide.
- Jorge Blanco, Javier Abad
Justin Long as Lem Korplog, a teenage boy living in Glipforg on Planet 51. Long also voices Rover, a robotic vehicle probe that studies the planet (mostly rocks). Dwayne Johnson as Captain Charles T. "Chuck" Baker, a human NASA-astronaut. Jessica Biel as Neera, a teenage girl and Lem's love interest.
Lem Korplog is the main protagonist of the 2009 animated film Planet 51. He is a teenaged alien boy living on Planet 51 until he discovered a human named Chuck Baker landing on his planet. No one on Lem's planet knew what a "human" was and started freaking out at the the sight of the "alien".
Planet 51 Cast. Susan Karen Gillan Neera Jessica Biel Lem Justin Long General Grawl Gary Oldman Skiff Seann William Scott Professor Kipple John Cleese Eckle Freddie Benedict Glar Alan Marriott Soldier Vesklin Matthew Horne Soldier Vernkot James Corden Eric Tyler Perry. Categories.
Captain Charles T. Baker : Either your name is Lem, or you want to mate with me. Houston, we have a little problem. Lem : [to weird bubbly fish-like pets] I don't want to hear a single bubble! Lem : Especially you, Bubbles.
