The deal was announced Tuesday by Greenberg and Starz President and Chief Executive Officer Chris Albrecht. Terms of the deal were not disclosed.
Film Roman has produced animation for Fox Television/Gracie Films' "The Simpsons," Fox Television's "King of the Hill," Marvel Entertainment's "Super Hero Squad," "The Avengers" and "Ultimate Spider-Man" and MTV's "Beavis and Butt-Head."
"We have the utmost respect for the people of Film Roman and the work they produce," Albrecht said in a statement. "We wish Scott and his team nothing but success with this new venture."
"Film Roman is unmatched in the quality and breadth of the traditional animation it creates, and with its recent successful move into CG animation, the studio is poised for even bigger growth," Greenberg said. "I'm looking forward to returning to the company where I had so much success and working with our talented artists and executives to make Film Roman the preeminent TV animation company, creating brands that work in a multi-platform environment world-wide."