EXCLUSIVE: Adventure Time, one of the most popular shows on Cartoon Network, is being developed at Warner Bros. for the big screen as an animated feature. Created by Pendleton Ward at Cartoon Networks Studios, Adventure Time follows the escapades of 12-year-old boy Finn and best friend dog Jake who fight fiercely in a quest to protect their beloved Land of Ooo, usually from the Ice King who is searching high and low for his Princess Bubblegum. The project will be produced by the winning combo of Chris McKay and Roy Lee.
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Cloris Leachman voices the farm world alternate version of Marceline as an old woman guarding the body of the alternate version of the Ice King in one episode. Olivia Olson does Marceline's speaking and singing voice in her regular appearances.