Who would be the most interesting characters to pair up in a Supernatural and The Flash crossover fanfic?

Iron Man and Castiel would be an interesting pair. Iron Man with his high - tech gadgets and Castiel with his angelic powers. Iron Man could be intrigued by Castiel's ability to teleport and heal, and Castiel might be fascinated by Tony's technology. They could work together to fight a threat that combines technology and the supernatural, like a group of demons that are using stolen Stark tech.

Arya Stark and Castiel. Arya is a skilled assassin with a thirst for revenge. Castiel is an angel who often struggles with understanding human emotions. Their interactions could be really fascinating. Castiel could help Arya understand the deeper spiritual side of her revenge, while Arya could teach Castiel about the importance of personal vendettas in the context of the cut - throat world of Westeros.

Definitely Percy and Dean. Percy has his quick - thinking and his water powers from being a son of Poseidon, while Dean is the tough, street - smart hunter. Their different personalities and skills would create an interesting dynamic. They could learn from each other, like Percy teaching Dean about Greek mythology and Dean showing Percy some of his hunting tricks.

Castiel and Danny would be an unexpected but cool pairing. Castiel is an angel with his own unique powers and view of the world. Danny's half - ghost nature would be something completely new to Castiel. They could have some really deep and strange conversations about the nature of life, death, and the afterlife. And when it comes to fighting enemies, their combined powers could be really effective.

Edward Cullen and The Flash would make for an exciting pair. Edward has his vampire powers, including super - strength and enhanced senses. When combined with The Flash's super - speed, they could be an unbeatable team. Imagine them racing against each other at first, testing each other's limits, and then realizing they can achieve more together. Also, Edward's brooding nature and The Flash's more upbeat and positive attitude would create a great contrast in the story.

Naruto and Aang would be a great pair. Aang's carefree and spiritual nature could contrast with Naruto's more boisterous and determined personality. They could learn a lot from each other. Naruto could teach Aang about never giving up on your dreams in a more direct and aggressive way, while Aang could show Naruto how to be more in tune with the spiritual side of things.

Definitely Harry and Aslan. Harry has always been the hero in the fight against Voldemort, and Aslan is the great lion, the savior of Narnia. Their meeting would be full of wisdom exchange. Harry could learn from Aslan's all - knowing and powerful nature, and Aslan might be interested in Harry's ability to resist the Dark Arts.

Another great pairing could be Harry and Sasuke. Both have a dark side they struggle with. Harry has the connection to Voldemort and Sasuke has his thirst for revenge. They could bond over their internal battles and learn from each other's experiences. Harry could teach Sasuke about the importance of friendship in the fight against evil, and Sasuke could show Harry some advanced combat skills.

Sonic and Pikachu would be a really interesting pair. Sonic's high - speed and adventurous nature combined with Pikachu's electric powers and cute but brave personality could lead to some really fun and action - packed scenes. They could race each other and then work together to face challenges.

Naruto and Tsukune would be an interesting pair. Naruto's energetic and determined nature combined with Tsukune's kind heart and his own growth as a character in the Rosario world could lead to some great interactions. They could learn from each other's ways of dealing with challenges and protecting their friends.