Concept

The season follows the adventures of Finn the Human, a human boy, and his best friend Jake, 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, wherein they interact with the other major characters, including Princess Bubblegum, The Ice King, Marceline the Vampire Queen, Lumpy Space Princess, and BMO. Common storylines revolve around: Finn and Jake discovering strange creatures, battling the Ice King, and battling monsters to help others. Various other episodes deal with Finn attempting to understand his attraction towards Bubblegum.^[1] Two of the season's final episodes, "Mortal Folly"/"Mortal Recoil", expand the mythology of the show by introducing the Lich (voiced by Ron Perlman), who would become the show's main antagonist.^[2]

Production

After Adventure Time debuted on April 5, 2010, with "Slumber Party Panic" and "Trouble in Lumpy Space", the series was quickly renewed for a second season of 26 eleven-minute segments.^[3][4] Around August 2010, the writing for the second season was finished, and the production staff had started to receive bits of animation from the show's overseas animation staff. The first episode to enter into production was "Loyalty to the King", based on its production code. However, it was later temporarily shelved, and aired as the season's third episode.^[5] The third episode produced, "It Came from the Nightosphere", was instead chosen to open the season. When the network announced the start of season two, the episode was not finished. On the official Frederator site, contributor Eric Homan noted that he would "prefer [that the series] stock up on a few episodes before jumping into season two, but it ain't my network".^[6] The episode was the first episode storyboarded by Rebecca Sugar. During the network pitch of the episode, Ward beatboxed and Sugar played ukulele and the two performed "The Fry Song". Sugar later called the experience "super terrifying", although the network did green-light the episode.^[7]

This season's episodes were produced in a process similar to those of the previous season. Each episode was outlined in two-to-three pages that contained the necessary plot information.^[8] These outlines were then handed to storyboard artists, who created full storyboards.^[9] Design and coloring were done at Cartoon Network Studios in Burbank, California, and animation was handled overseas in South Korea by Rough Draft Korea and Saerom Animation.^[10][11][12] The exception to this is the sixteenth episode, "Guardians of Sunshine", which features roughly 5 minutes of 3-D animation that emulates the style of 8-bit video games.^[13] For these segments, the series asked animator Ke Jiang for assistance; he single-handedly "modeled, rigged and animated" the sequence.^[14] The Marvelous Misadventures of Flapjack creator Thurop Van Orman was brought in to work on the season as supervising producer and outline writer when his show entered a hiatus, but left shortly after Flapjack wrapped up production in order to concentrate on other projects.

Storyboarded artists for the season included Adam Muto, Sugar, Kent Osborne, Somvilay Xayaphone, Cole Sanchez, Benton Connor, Jesse Moynihan, Ako Castuera, and Tom Herpich.^{[lower-alpha 1]} Conner had just finished a job working on the series The Marvelous Misadventures of Flapjack and had subsequently taken on a job as a storyboard artist for Regular Show. However, due to scheduling delays, he was free to work on two episodes of Adventure Time—"Blood Under the Skin" and "Slow Love"—as a freelance storyboard artist.^[15][4] The season was the last to feature creative director Patrick McHale in a full-time capacity. He was still credited with being part of the story writing team with the premiere of season three, but his level of contribution was more limited than it had been for the first two seasons.^[16]

Ratings

The season debuted on October 11, 2010, with the episode "It Came from the Nightosphere". The episode was watched by 2.001 million viewers.^[29] This marked a decline from the first-season premiere, which had been viewed by 2.5 million viewers, but it marked an increase from the first-season finale, which was watched by only 1.77 million viewers.^[30][31] "It Came from the Nightospere" also marked gains when compared to the same timeslot a year prior; for instance, 732,000 kids aged 6–11 watched the episode, an increase by 35 percent when compared to the previous year.^[32] The season hit a high with its third episode, "Loyalty to the King", which was watched by 2.541 million viewers.^[33] The season ended with "Heat Signature", which was viewed by 1.975 million viewers.^[34] The season was originally supposed to end with the two-parter "Mortal Folly"/"Mortal Recoil", but due to a scheduling conflict, "Heat Signature" was the last episode of the season aired.^[35] The season aired on Mondays at 8:00 pm, the same slot as the first season.

Reviews and accolades

The season's first episode, "It Came from the Nightosphere" was largely well received by critics. Tyler Foster of DVD Talk called it "a pretty decent example of all the notes the show can hit."^[36] He was particularly pleased with the way "the rift between Marceline and her dad is handled with a nice seriousness that fits right in alongside absurd gags about penguins".^[36] He also noted that "any episode that includes a song is a plus in my book."^[36] It was also called the "real highlight" of the eponymous DVD release by Charles Webb of MTV Geek.^[37] IGN writer Matt Fowler later referred to the episode as a "classic".^[38] The episode was later nominated for a 2011 Primetime Emmy Award for Outstanding Short-format Animated Program, although it did not win.^[39]

The series was a candidate for the "Best and Worst of 2010", a list compiled by the Bucks County Courier Times; the series was under the "Best Animated TV Show" category.^[40] Patrick Broadnax of the Huntsville Examiner named the series one of "The Most Underrated Shows on Television".^[41] He argued that, in its second season, the show was "shining as one of [Cartoon Network's] best decisions ever."^[41] He praised the spirit of the series, noting that it was reminiscent of the "charm that 90's cartoon held so gracefully".^[41] He concluded that the show was "goofy, colorful fun that should be able to put a smile on anyone's face."^[41] Tyler Foster of DVD Talk wrote that the season release was "highly recommended". He praised that the season was able to "explor[e] and [expand] on everything that" was set up in the first season of the show.^[42] He specifically praised "Power Animal, "Death in Bloom", "Crystals Have Power", and "Her Parents" as the best episodes from the set. Foster was slightly critical of the visual presentation, noting that some aliasing was present, but felt that the commentaries were an added bonus.^[42]

The show itself was nominated for an Annie Award for Best Animated Television Production for Children. However, the series did not win.^[43] The episode "It Came from the Nightosphere" was nominated for a 2011 Primetime Emmy Award for Outstanding Short-format Animated Program, although the episode did not win.^[39]

Full season release

The full season set was released on DVD and Blu-ray on June 4, 2013.^[74]