Celtic AU

Celtic AU (also known as Highland AU or Brave AU) is an AU (Alternate Universe) within the Rise of the Brave Tangled Dragons universe and the Rise of the Brave Tangled Frozen Dragons universe. In the AU, Rapunzel, Merida, Hiccup and Jack Frost are all portrayed as people living in the Scotland Highlands. Because it is not canon, ideas for this AU are shown through fanfiction, fanart, and other fan-made works.

About this AU
In this AU, the big four are portrayed as Scots and Archers. Because Merida - one of the original members of the big four - is a princess of highlands, this AU usually involves itself within the plot and settings from Brave, setting the characters as people from the Kingdom of DunBroch, though this is not required.

Merida DunBroch
Because she is already a scot, Merida most commonly plays herself (much in the same way that Hiccup plays himself in the Viking AU), acting as future/current queen of the DunBroch and master archer that passes her skills to her friends.