"It Came from the Nightosphere" is the first episode of the second season of the American animated television series Adventure Time. 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 (voiced by Martin Olson) from the Nightosphere after Marceline (voiced by Olivia Olson) sings a song about the relationship between her and her estranged father. However, Finn—who is begrudgingly aided by an enraged Marceline—is forced to stop him from stealing all the souls in Ooo. Based on a story by Merriwether Williams, Steve Little, Patrick McHale, Pendleton Ward, and Thurop Van Orman, "It Came from the Nightosphere" was written and storyboarded by Adam Muto and Rebecca Sugar. This episodewhich was the first one that Sugar worked on as a storyboard artistfeatures a song that she wrote entitled "The Fry Song", which would later go on to be very popular with the show's fanbase. The episode also guest stars Martin Olson as Marceline the Vampire Queen's father Hunson Abadeer. Olson would reprise his role in the series' third, fourth, and tenth seasons. "It Came from the Nightosphere" originally aired on Cartoon Network on October 11, 2010. The episode was watched by 2.001 million people on its debut and received largely positive critical attention. At the 2011 Primetime Emmy Awards, the episode was nominated for Outstanding Short-format Animated Program, although the episode did not win. The episode was later released on the eponymous compilation DVD on March 6, 2012, before it was re-released as part of the complete second season DVD/Blu-ray set on June 4, 2013. Plot After Finn agrees to help Marceline record one of her musical compositions, she begins to sing "The Fry Song"—a tune about the rift between herself and her father, Hunson Abadeer. Finn, feeling sorry for her, decides to summon her father from the hellish Nightosphere, failing to realize that her father is the domain's dark leader and that he consumes souls. He materializes before Marceline and Finn, attempts to kill Finn by devouring his soul, and successfully steals Marceline's axe bass. Finn and Marceline give chase. Marceline's father moves throughout Ooo, consuming the souls of all living creatures that he can find. Finn and Marceline first try to