Simon Wells is directing the performance-capture movie, which follows a boy named Milo who stows away aboard a spaceship to rescue his mom after she's kidnapped by aliens. Green will play Milo.

The project, from Disney and filmmaker Robert Zemeckis' ImageMovers, reunites Green with his "Austin Powers" mom, Mindy Sterling, who will play the alien leader of Mars, inspiring terror in all who meet her. Dan Fogler ("Fanboys") is playing Gribble, a friend of Milo, and Joan Cusack ("Confessions of a Shopaholic") plays the mom.

Simon and Wendy Wells adapted cartoonist/writer Breathed's book for the screen.

Green described the mo-cap process as "performing in a black box theater with no costumes, no sets, just actors looking into each other's eyes trying to make it real."

The actor, who continues to co-direct and write "Robot Chicken," the Emmy-winning stop-motion series he co-created with Matthew Senreich, next appears in the big-screen comedy "Old Dogs" with Robin Williams and John Travolta.