children. The episode prominently features "The Fry Song", a song co-written by Ward and Sugar. This song was Sugar's first for the series, and it would go on to become popular with the fanbase of Adventure Time. Sugar's original version was inspired by Broadway theatre and was more sombre. Ward helped Sugar add more jokes to the final version. During the network pitch of the episode, Ward and Sugar performed the song for network executives, with the former beatboxing and the latter singing and playing ukulele. Although the pitch went over well and the episode was greenlit, Sugar later called the experience "super terrifying". The design for Abadeer's monster form caused issues with the series' standards and practices department. The initial designs were deemed "too vagina-like", and the network made the show redesign the character. However, during the second submission, the network felt that it looked "too much like a penis". Ward later expressed his incredulousness on the commentary track for "It Came from the Nightosphere", saying, "We were just like, 'What is happening? This is a monster, with just a crazy, weird face.'" Voice acting Martin Olson, the father of Olivia Olson who voices Marceline, provides the voice for Marceline's demonic father Hunson Abadeer. A year after the series had been cast, Ward approached Olson and asked him if he wanted to voice a character on the show. Olson was apprehensive at first, arguing that he was not an actor but a writer, instead. Ward insisted and Olson eventually relented. Olson later joked that he was "in heaven" during the recording of the dialogue because the episode featured him "fighting to the death with [his] daughter." Olson later noted that the opportunity to voice act with her father was "pretty cool”. Olson would make a cameo in the third-season episode "Memory of a Memory", and would be featured in major roles in the fourth-season two-part episode "Return to the Nightosphere"/"Daddy's Little Monster", and the tenth-season episode "Marcy & Hunson". Reception "It Came from the Nightosphere" first aired on Cartoon Network on October 11, 2010. The episode was viewed by 2.001 million viewers and scored a Nielsen rating of 1.3/2 percent. This means it was seen by 1.3 percent of all households and 2 percent of all households watching television at the time of the episode's airing. This marked a decline from the first season premiere, which had been viewed