Elsa with 'Game of Thrones' has this incredible texture. Putting someone with ice powers in Westeros feels obvious, but the fics that do it right focus on the political and psychological layers, not the spectacle. She's not just a queen there; she's a power player among power players, and her isolation takes on a whole new meaning. The North sees her as a goddess, Cersei sees her as a threat, and Jon... well, that's where the interesting stuff happens. Fics that pair her with Jon often fall into the 'two sad rulers' trap, but the best ones make their shared burdens a source of tension, not instant comfort. I recently read one where she arrives during Hardhome, and the sheer chaos of that scenario was more gripping than any romance subplot.
On the lighter side, Anna and Kristoff in the 'How to Train Your Dragon' universe just works. Berk's rough-and-tumble vibe is a perfect playground for Anna's chaotic energy, and Kristoff and Sven fitting in with the dragon riders feels oddly natural. It's less about epic stakes and more about found family and hilarious culture clashes. Anna trying to befriend a Gronckle or Kristoff bartering with the traders of Berk creates these warm, slice-of-life moments that the original movies do so well.