List of episodes

Season 2
Season two contains 26 half episodes and originally aired from October 2010 to mid-2011. Their titles and production codes were revealed on the Frederator Blog.

Season 3

 * A third season has been confirmed by Pendleton Ward.
 * Storyboard pictures from a third season episode titled "Door Jam" have been released to public on Fred Seibert's Flickr.
 * It is confirmed by Pendleton Ward that there is going to be a gender swapped episode in season three.
 * According to Adam Muto, season 3 will also contain a two-part episode.

Season 4

 * A fourth season was apparently confirmed at WonderCon 2011.

Other planned episodes
These episodes were planned, and are known from design documents released by Frederator Studios in 2009 during the production of the first season. However, they were not produced for season one, and it is unlikely that they will actually be made into full episodes. According to an old blog post, "Ice King Has a Point" was supposed to be a 27th episode of a 26-episode season, because episode #6 had been scrapped. However, because episode 6 ("What Have You Done?") actually was eventually made, it's likely that "Ice King Has a Point" was either canceled or incorporated into "What Have You Done?"

"Brothers in Insomnia" was originally episode #692-002. However, it was scrapped, and its production number was taken by "Rainy Day Daydream", which was actually one of the last episodes produced for season one.

Adam Muto has confirmed "Jakesuit" eventually worked its way into "The Silent King", which may give hints about the plot outline of Jakesuit.