<P> As a result of Finn's father allowing Finn's younger sister to join them in playing with his Lego sets, aliens from the planet Duplon beam down and announce their plans to destroy them . </P> <Ul> <Li> Chris Pratt as Emmet Brickowski, an everyman and construction worker from Bricksburg </Li> <Li> Will Ferrell as Lord Business, president of the Octan Corporation under the name President Business <Ul> <Li> Ferrell also plays "The Man Upstairs," a Lego collector in the live - action part of the film </Li> </Ul> </Li> <Li> Elizabeth Banks as Lucy / Wyldstyle, a Master Builder </Li> <Li> Will Arnett as Bruce Wayne / Batman, a DC Comics superhero who is a Master Builder </Li> <Li> Nick Offerman as Metal Beard, a giant makeshift pirate and Master Builder </Li> <Li> Alison Brie as Princess Unikitty, a unicorn - horned kitten and Master Builder from Cloud Cuckoo Land </Li> <Li> Charlie Day as Benny, a "1980 - something space guy" who is a Master Builder </Li> <Li> Liam Neeson as Bad Cop / Good Cop, a double - headed police officer that leads the Super Secret Police <Ul> <Li> Neeson also voices Pa Cop, Bad Cop / Good Cop's father </Li> </Ul> </Li> <Li> Morgan Freeman as Vitruvius, a blind old wizard who is one of the Master Builders </Li> <Li> Channing Tatum as Clark Kent / Superman, a DC Comics superhero who is one of the Master Builders </Li> <Li> Jonah Hill as Hal Jordan / Green Lantern, a DC Comics superhero who is one of the Master Builders </Li> <Li> Cobie Smulders as Diana Prince / Wonder Woman, a DC Comics superhero who is one of the Master Builders </Li> <Li> Jadon Sand as Finn, The Man Upstairs' young son in the live - action part of the film </Li> </Ul> <Li> Chris Pratt as Emmet Brickowski, an everyman and construction worker from Bricksburg </Li> <Li> Will Ferrell as Lord Business, president of the Octan Corporation under the name President Business <Ul> <Li> Ferrell also plays "The Man Upstairs," a Lego collector in the live - action part of the film </Li> </Ul> </Li>

Who does the voice of emmet in the lego movie
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