"It Came from the Nightosphere" is the first episode of the second season of the American animated television series Adventure Time. The episode was written and storyboarded by Adam Muto and Rebecca Sugar, from a story by Merriwether Williams, Steve Little, Patrick McHale, Pendleton Ward, and Thurop Van Orman. It originally aired on Cartoon Network on October 11, 2010. The episode guest stars Martin Olson as Marceline the Vampire Queen's father Hunson Abadeer. 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. In this episode, Finn releases Marceline's dad from the Nightosphere after Marceline (voiced by Olivia Olson) sings a song about the relationship between her and her estranged father. However, Finn is forced to stop him from stealing all the souls in Ooo. "It Came from the Nightosphere" was the first episode written and storyboarded by Sugar; Sugar would go to be highly praised for her work on the series. The episode was watched by 2.001 million people and received largely positive critical attention. In addition, the episode was nominated for a 2011 Primetime Emmy Award for Outstanding Short-format Animated Program, although the episode did not win.