The episodes of Adventure Time, an American animated television series created by Pendleton Ward (pictured) for Cartoon Network. The series follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will. Finn and Jake live in the post-apocalyptic Land of Ooo. Along the way, they interact with the show's other main characters: Princess Bubblegum (voiced by Hynden Walch), the Ice King (voiced by Tom Kenny), and Marceline the Vampire Queen (voiced by Olivia Olson). The show originally began in 2008 with a pilot for Random! Cartoons on Nicktoons Network. The pilot quickly became a cult hit on YouTube. After Nickelodeon declined to turn the short into a full-fledged show, Cartoon Network purchased the rights, and Adventure Time launched as a series on April 5, 2010. Adventure Time is produced by Cartoon Network Studios and Frederator Studios. The series is rated TV-PG. Several compilation DVDs have been released. Ever since its debut, Adventure Time has been a ratings success for Cartoon Network. As of March 2012, the show is viewed by approximately 2 to 3 million viewers per week. The show has received positive reviews from critics and has developed a strong following among teenagers and adults, many of whom are attracted due to the series' animation, stories, and characters.