Another popular pairing is Daenerys and Anna. Daenerys' strong - willed and ambitious nature combined with Anna's adventurous and kind - hearted personality can lead to some great storylines. They could both be on quests for different things but end up helping each other out in unexpected ways.
Arya Stark and Kristoff is also a pairing that shows up in fanfiction. Arya's skills as an assassin and her no - nonsense attitude paired with Kristoff's down - to - earth and loyal nature can make for some fun and action - packed stories. They might go on adventures together, with Arya teaching Kristoff some of her combat skills and Kristoff showing Arya the beauty of the Frozen world.
Jon Snow and Elsa seem to be a popular pairing. The idea of the brooding and noble Jon with the powerful and reserved Elsa has a certain appeal. Their different worlds and personalities could create an interesting dynamic.
Some fans also like the idea of Tyrion Lannister and Dandelion from The Witcher being paired up in fanfiction. Tyrion's wit and Dandelion's charm could create some really humorous and interesting interactions. They could get into all sorts of mischief together in a crossover story.
Jon Snow and Daenerys Targaryen are quite popular. Their pairing in regular fanfiction was already big, and in slash fanfiction, it can take on new and different dynamics. Maybe a story where they are not just lovers but also have a more equal partnership in ruling the Seven Kingdoms, with a slashy undertone of deep emotional and physical connection.
Some fanfiction might also feature Ron and Kristoff. They are both a bit more down - to - earth characters compared to their counterparts. Their interactions could be full of humor, like Ron being amazed at Kristoff's ability to handle reindeer and Kristoff being confused by Ron's wizarding world gadgets.
Clark Kent and Arya Stark would be an interesting pairing. Clark with his superpowers and noble nature, and Arya with her assassin skills and strong will. They could learn a lot from each other. Clark could teach Arya about using her powers (if she were to gain some in this fanfic) for good, and Arya could teach Clark some of her stealth and combat techniques.
Jon Snow would also be a great addition. His journey from being a bastard to a leader in Game of Thrones could be paralleled in the world of Frozen. He could learn from Elsa about controlling his powers (if we assume he has some new ice - related powers in this crossover) and in turn, teach the people of Arendelle about loyalty and sacrifice, which are values he has held dear in Westeros.
Another popular pairing is Gandalf and Tyrion Lannister. Gandalf is the wise wizard and Tyrion is the clever dwarf in Game of Thrones. Their conversations would be full of wisdom and political intrigue as they both are very intelligent and can manipulate situations to their advantage.
I think Iron Man and Tyrion Lannister would be a really interesting pairing. Iron Man is this brash, genius billionaire, and Tyrion is the clever, outcast dwarf in Westeros. They could bounce ideas off each other, with Iron Man showing Tyrion his high - tech gadgets and Tyrion teaching Iron Man about the political games in Westeros.
Another interesting pairing would be AOC and Arya Stark. Arya is a fierce and independent fighter. AOC could inspire Arya to think about the bigger picture in terms of changing the social order. Meanwhile, Arya could protect AOC from the many enemies she would surely make in the cut - throat world of Game of Thrones as she tries to implement her ideas.
I think Jon Snow and Spock would make an interesting pair. Jon is a natural leader, and Spock's logical thinking could complement his more instinct - based leadership. They could learn a lot from each other, with Jon showing Spock about the harsh realities of a feudal society and Spock teaching Jon about the power of reason.
Harry and Elsa would be a very interesting pairing. Harry, with his experience in facing dark magic, could offer Elsa a new perspective on her powers which she has always seen as a curse. And Elsa, with her ice powers, could show Harry a different kind of magic that he's not used to in the wizarding world. Another interesting pairing would be Ron and Kristoff. They both have a simple - minded charm and could get into all sorts of funny situations together, like getting lost in the Forbidden Forest or on the mountains in Arendelle. Also, Hermione and Anna would be great. Hermione's intelligence and Anna's determination would make them a formidable duo as they try to solve problems in both their worlds.