Adventure Time is an American animated television series created by Pendleton Ward for Cartoon Network. It follows the adventures of a boy named Finn (voiced by Jeremy Shada) and his best friend and adoptive brother Jake (John DiMaggio)—a dog with the magical power to change shape and size at will. Finn and Jake live in the post-apocalyptic Land of Ooo, where they interact with Princess Bubblegum (Hynden Walch), the Ice King (Tom Kenny), Marceline the Vampire Queen (Olivia Olson), BMO (Niki Yang), and others. The series is based on a 2007 short produced for Nicktoons and Frederator Studios' animation incubator series Random! Cartoons. After the short became a viral hit on the Internet, Cartoon Network commissioned a full-length series, which previewed on March 11, 2010, and officially premiered on April 5, 2010.