If you've caught any of the promotion for "Mars Needs Moms," you're probably under the impression that Seth Green has a major role in the Robert Zemeckis-produced science-fiction movie that opens Friday.
After all, Green's name and cartoon visage are featured on the poster for the 3-D performance-capture film, and the actor has made appearances on behalf of the animated movie, posing on the red carpet at the film's premiere and sitting for an interview on "Conan." Casual fans could be forgiven for thinking he voiced his character, the 9-year-old Milo.
But while Green's movement is represented in the movie, his voice never is.
During production, the star acted as he would in any performance-capture movie, which requires actors to move in special sensor-equipped suits. Green spent six weeks outfitted in a uniform to play the child protagonist whose mother is kidnapped by Martians (you can see a shot of the get-up above), while also simultaneously performing his lines.
But during the post-production process, in which animators used computer imaging to shape the character, filmmakers noticed an issue. Green was able to physically embody a 9-year-old -- imitating the movements and behaviors of a child -- but his voice sounded too mature for the character. So they decided to hire an unknown child actor, Seth Dusky, 11, to come in and record all of Milo's lines over Green's initial recording. (Dusky's name is not featured on the poster.)