Adventure Time AU

Adventure Time AU is a popular AU (Alternate Universe) within the Rise of the Brave Tangled Dragons fandom. In the AU, Rapunzel, Merida, Hiccup and Jack Frost play roles of the main characters from the hit cartoon show Adventure Time. Because it is not canon, ideas for this AU are shown through fanfiction, fanart, and other fan-made works.

About the AU
This AU was spawned from recurring fanart. The Adventure Time AU showcases the Big Four (and supporting characters of the fandom) inplace of the characters from the show Adventure Time, almost right down to their personalities. The characters often swap roles when the scenario is genderbent for the "Fionna and Cake" story.

Hiccup Horrendous Haddock III
Hiccup plays the role of Finn the Human. Logically, this would make Toothless the play the part of Finn's his friend and "brother" Jake the Dog. In the genderbent story, he plays the role of Prince Gumball, Princess Bubblegum's male counterpart.

Jack Frost
Jack Frost, for his immortality, ice powers and playful demeanor, plays the role of Simon Petrokove, A.K.A The Ice King. Like the Ice King, Jack would repeatedly kidnap Rapunzel (Princess Bubblegum) in a missguided goal for love and companionship. In the genderbent continuity, Jack plays Marshal Lee, Marceline's male counterpart.

Merida DunBroch
Merida plays the role of Flame Princess. She's the daughter of the Flame King and girlfriend to Hiccup (Finn).

Rapunzel Corona
Rapunzel plays the role of Princess Bubblegum. In the genderbent story, she plays the role of Fionna the Human, Finn's female counterpart. This could be because Jack Frost (Ice King) has an infatuation with Rapunzel (Princess Bubblegum), and would associate his fictional love with his real-world faux love.

Mavis Dracula
Fans like to make Mavis play the role of Marceline, Vampire queen and heir of the Night-o-Sphere. Because so many fans have associated her with this character, she can be considered an official addition to the AU.