For me, Sirius Black and Elsa would make an interesting pair. Sirius, having been through so much trauma and isolation himself, could empathize with Elsa's situation. He could also show her how to break free from her self - imposed exile. Anna and Neville Longbottom could also be a great pair. Neville has grown from a timid boy to a brave young man, and his kindness and new - found courage would mesh well with Anna's tenacity. And Hagrid and Olaf? Just imagine Hagrid's reaction to Olaf, the snowman. He would probably be both amused and protective, and Olaf could learn a lot from Hagrid about the world outside of Arendelle.
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.
Harry and Elsa would be a very interesting pairing. Harry has dealt with a great burden of being 'the chosen one' and Elsa has had to bear the weight of her powers. They could understand each other's isolation and the fear of their own abilities. They could exchange stories about how they overcame their insecurities and learn from each other's experiences.
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.
I think Harry Potter and Nick Burkhardt would be an interesting pairing. Harry has his experience with fighting dark magic and Nick has his knowledge of the Wesen world. They could learn a lot from each other. Harry could teach Nick about some of the more complex spells, while Nick could introduce Harry to the different types of Wesen and how to deal with them.
I think Luna Lovegood and Prompto would make a really fun pairing. Luna has her unique and somewhat otherworldly view of things, and Prompto is the cheerful and energetic one in the FFXV group. They could have some really interesting conversations about the strange creatures in both their worlds. Also, Severus Snape and Gladio could be an unexpected but fascinating pairing. Snape's dark and brooding nature contrasted with Gladio's tough and protective side.
One of the most interesting pairings would be Hawkeye and Sven. Hawkeye could ride on Sven while using his archery skills to fight enemies in the frozen landscapes. It would be a unique combination of mobility and ranged attacks. Another good pairing is Loki and Hans. They both have a devious side and could plot together to cause trouble in the crossover. However, the Avengers and the Frozen heroes would have to work together to stop their evil plans. And Scarlet Witch and Elsa could also be a fascinating pairing. Scarlet Witch's powers of manipulation and Elsa's ice powers could create some really cool and powerful combinations when they team up against the common enemies.
Hermione Granger and Rukia Kuchiki could make a great pairing. Hermione is extremely intelligent and well - versed in magic theory. Rukia, on the other hand, has a deep understanding of the spiritual world. They could collaborate on researching a strange phenomenon that is occurring between the two worlds, like a merging of certain spells and Soul Reaper techniques. Their different personalities would also create some interesting interactions, with Hermione being more outspoken and Rukia more reserved.
I think Buffy and Hermione would make an interesting pairing. Hermione's intelligence and knowledge of magic combined with Buffy's combat skills could lead to some great adventures. They could learn a lot from each other.
Hermione and Death could be an interesting pairing. Hermione is known for her intelligence and thirst for knowledge. Death, being an all - powerful entity in the Darksiders universe, could have a lot of knowledge that Hermione would be eager to learn. Their conversations would likely be deep and thought - provoking as she tries to understand the nature of death from his perspective.
Harry Potter and Lucy Pevensie would make an interesting pairing. Harry is used to being the hero in his own world, but Lucy has a unique kind of innocence and faith in Narnia. They could learn a great deal from each other. Harry could teach Lucy about more complex forms of magic, while Lucy could show Harry the power of believing without seeing, which is a big part of her relationship with Aslan.
Definitely Harry and Gru. Harry, with his experience in facing great evil, could teach Gru a thing or two about true heroism. And Gru, with his knowledge of elaborate heists, could show Harry some unique ways to get around obstacles. Another interesting pairing would be Luna and Agnes. Luna's dreamy and unique perspective would blend well with Agnes' innocence and curiosity.