Storyboards are graphic organizers such as a series of illustrations or images displayed in sequence for the purpose of pre-visualizing a motion picture so the animators can work in the between frames of the key frames.
Storyboard pictures of Adventure Time has been released many times on the Frederator blog as to show a part of an episode, and show there also been cut parts of an episode, there are pieces of the storyboards put together along with the voices in a video known as animatics.
Gallery
Cake the Cat and Fionna the Human
The start of Fionna and Cake
