Strife from DarkSiders might interact well with Iron Man. Strife is a bit of a rogue character, and Iron Man with his sarcastic and independent nature could find common ground. They could both bring their unique skills and weaponry to the table and have some witty banter while fighting enemies together in the fanfiction.
Death from DarkSiders and Black Widow could have an interesting interaction. Death has seen countless deaths and has a very different perspective on life and death compared to the human Black Widow. Their conversations could be deep and thought - provoking as they work together on a mission.
I think Quinn and Black Widow would be an interesting pair. Quinn is used to being in a position of power and popularity in the Glee club, and Black Widow is a strong female character in the Avengers. They could have some really cool exchanges about strength and femininity.
Hulk might be an interesting one too. Sonic's speed could either annoy or amuse Hulk. If they end up on the same side, Sonic could use his speed to lead Hulk towards the enemies. And Hulk's raw strength could be something Sonic would be in awe of. They could have a really unique dynamic, like a fast - moving pest annoying a big, strong giant at first, but then they become an effective team.
Doctor Strange and Ajak. Doctor Strange is well - versed in the mystic arts and Ajak has a lot of knowledge about the Eternals' history and their connection to the Celestials. Their knowledge areas could intersect, and they would likely be the first to start sharing information. Maybe Strange senses some strange energy related to the Eternals and approaches Ajak to find out more.
I think Tony Stark and Damon Salvatore would be very likely to interact. Tony with his high - tech gadgets and Damon with his vampire charm and quick - witted nature. They could have some really interesting banter, like trading sarcastic remarks while trying to solve a common problem.
Probably Ash and Iron Man. Iron Man is always curious about new things and Ash with his Pokémon would be quite an interesting sight for him. He'd likely approach Ash first to ask questions about what he is and what those strange creatures are.
It could be Percy and Black Widow. Natasha is a master of reading people, and she'd notice Percy right away. She might approach him in a more stealthy way compared to the others, trying to assess if he's a threat or an ally. And Percy, being used to danger, would be on his guard at first, but then start to trust her as she shows her good intentions.
I think Mirabel from Encanto and Aang from Avatar would be likely to interact. Mirabel is all about finding her place in the family and Aang is on a journey to save the world. They could share their experiences of feeling different and having big responsibilities.
I think Naruto and Optimus Prime would be likely to interact. Naruto is the main character in his world, always looking for ways to protect his friends and village. Optimus Prime is the noble leader of the Autobots. Their leadership qualities and sense of justice would make them natural allies. They could share their experiences and strategies in fighting against evil.
Spyro and Twilight Sparkle would be likely to interact. Twilight is very intelligent and well - versed in magic, and Spyro has his own dragon powers. They could learn from each other. For example, Twilight could study Spyro's dragon magic, and Spyro could learn about the complex magic system in Equestria from Twilight.
Harry Potter himself could interact with Sophie from Huntik. Harry is used to facing great challenges and having a strong sense of justice. Sophie, with her connection to the Titans, could find common ground with Harry in their fight against evil. They could learn from each other's worlds and work together to overcome a powerful dark force that threatens both universes.