Fionna and Cake

"Adventure Time with Fionna & Cake" is an upcoming episode of season three of Adventure Time.

Synopsis
A trip to a parallel universe features Fiona and Cake exploring the Land of Aaa.

Characters

 * Fionna
 * Cake
 * Beemo
 * Prince Gumball
 * Ice Queen
 * Lord Monochromicorn
 * Marshall Lee
 * Snail
 * Lumpy Space Prince
 * Jelly Kinders
 * Tree Trunks (male)
 * Mrs. Cupcake
 * Lollipop Boy

Opening sequence
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This episode features a modified version of the Adventure Time Theme Song, sung by Natasha Allegri instead of Pendleton Ward. The sequence is identical to the regular version, although all the characters are replaced by their gender-swapped counterparts.

Aside from the main characters, all the Candy People (including Lollipop Girl and Mr. Cupcake) and Tree Trunks have had their genders reversed. Where Gingerbread Muto usually appears on the castle balcony, a Gingerbread Rebecca Sugar can be seen instead, which is appropriate because Adam Muto and Rebecca Sugar were the storyboard artists for this episode. Notably, Beemo appears the same, supporting the fact that Beemo has no gender.

Trivia

 * It has been confirmed that Fionna will be voiced by Madeliene Martin, Cake by Roz Ryan, Prince Gumball by Neil Patrick Harris and Ice Queen by Grey DeLisle.
 * Along with "What Was Missing" this was the only episode that had a slight part of its storyboard revealed before the season three promo.
 * This episode, along with "The Monster," was shown at Paley Center
 * This episode was leaked and illegally uploaded to Youtube about two weeks prior to its television premiere. The original source of the leak is currently unknown. It is also unknown whether this is a finished or work-in-progress version of the episode. Most illegal uploads of the video were terminated by copyright violation notices from Cartoon Network. It is possible the leaked episode is a fake version intentionally leaked to protect the real episode.
 * The sneak peak vs. the illegal episode, there is a difference in audio during the decoration of the candy hall. This maybe an audio swap decided some time after the sneak peak.
 * More recently, Natasha confirmed on her Formspring that the leaked episode was posted several days before the episode was screened at the Paley Center, and that neither are related in any form.