Frostcest

Frostcup (also known as Icest) is one of the more unusual pairings, pairing up Jack Frost from Rise of the Guardians with an alternate incarnation of himself. Though not one of the most popular ships, this pairing has many followers.

Popular AUs

 * Dark AU
 * Modern AU
 * Genderbend AU

Fanfiction
Note: Please add only ones that are part of the RotBTD fandom