Princess Mononoke AU

Princess Mononoke 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 from Princess Mononoke. This can be considered an offshoot to Studio Ghibli AU.

About this AU
Spawning from fanart, this AU places the Big Four, and other such characters in the fandom, as characters from Princess Mononoke.

Princess Mononoke AU is most commonly used for the Jarida or Mericcup pairing.

Hiccup Horrendous Haddock III
Between Astrid and Merida as Mononoke, Hiccup is cast as Prince Ashitaka. As he leaves home (which he can not return to) with his Red Elk, Yakul (as Toothless) so he could lift the curse (that is slowly killing) and uncover the evil that gave birth to demon that attacked and cursed him; and  'to see with eyes unclouded by hate' .

His mother's history in the Sanctuary and his bond with dragons also gives him the role of a male Mononoke/San. The Prince of Dragons with Cloudjumper and Toothless as his family.

Jack Frost
For Jarida he's cast as Ashitaka (with brown hair) as he falls in love with the Wolf/Bear Princess while trying to bring peace between man, the forest and it's spirits and gods.

Merida DunBroch
Merida is portrayed as the wolf/bear princess Mononoke (also known as San). As she and her wolf/bear mother and brothers fight to drive the humans away and kill the 'evil woman' that command them to destroy their forest for iron and killed half of their pack and other innocent animals. Her necklace can serve as the Crystal Dagger, a parting gift/good luck charm from her human prince.

Her archery skills can also cast her as a female Ashitaka and Angus as Yakul.

Hamish, Hubert and Harris
The brothers and their mother are portrayed as San's wolf family (when Merida is cast as San and when the four play the roles in their bears), but older so their sister could ride on one of they're back's. While Elinor is the wolf/bear goddess Moro.

Will -O'-the-Wisps
The Wisps are portrayed as the Kodama, tree spirits that show as a sigh that their home and trees are pure and healthy.

Astrid Hofferson
Fans have cast Astrid as San, but as a princess of Dragons and her racing paint as war paint.

Elsa Arendelle
Elsa as Mononoke is (by fans) the protector of the North Mountain with her reindeer brother(s).