wherein he became a recurring character. Henry Rollins voiced the cookie that angrily yells at Finn after he bumps into him. In an early animatic of the episode, Rollins voiced Mannish Man; he later returned to the series to voice the character of Bob Rainicorn in the second season episode "Her Parents". John Moschitta Jr. played the part of Keeper. Ward later recounted that Moschitta's dialogue in the episode was not delivered as fast as Ward wanted. Mannish Man was based on character by Justin Hunt that was originally created for a multi-user dungeon game. Originally, the character was supposed to be the start of a short that Ward and McHale made for CalArts. While it was never finished, a rough version of it was later released on the first season Adventure Time DVD. The sequence taking place in the Evil Guy's "Brain World" was written after executive producer Derek Drymon suggested that the scene could be longer. The heart beast was inspired after Ward saw several instances of Sacred Heart iconography in Mexico. Reception "The Enchiridion!" first aired on Cartoon Network on April 19, 2010. The episode was watched by 2.096 million viewers, and scored a 1.4/2 percent Nielsen household rating, meaning that it was seen by 1.4 percent of all households and 2 percent of all households watching television at the time of the episode's airing. The episode first saw physical release as part of the 2012 It Came From the Nightosphere DVD, which included 16 episodes from the series' first three seasons. It was later re-leased as part of the complete first season DVD in July 2012. In the Ancient Psychic Tandem Warcast podcast, author Lev Grossman and writer Zack Smith reviewed the episode, with the latter calling it a "good, charming little episode with a positive message to it". Grossman called it a good' episode, but noted that it possessed a sort of "cartoon physics" that the series later abandoned; he specifically highlighted the scene wherein Cinnamon Bun did a backflip and destroyed a tower. Ultimately, Smith called it an "interesting homage to Dungeons and Dragons [and] basic mythology". However, not all reviews were so complimentary. Tyler Foster of DVD Talk, in a review of the It Came From the Nightosphere DVD, called the episode "primitive" and noted that the episode "has a sense of being locked to a traditional story structure", a structure that he