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.
Artie and Iron Man could be likely to interact. Artie is really into technology with his wheelchair and all, and Iron Man is a tech genius. Iron Man could help Artie upgrade his wheelchair to something even more amazing. And on the other side, Mercedes and Captain America. Mercedes has a big heart and strong will, and Captain America would appreciate her spirit. They could bond over their love for their respective groups and their sense of justice.
Definitely Kurt and Thor. Kurt is all about fashion and self - expression, and Thor with his big personality and Asgardian style would make for a hilarious interaction. Maybe Kurt could even give Thor some fashion tips while Thor teaches Kurt about being a hero. Also, Puck and Hawkeye could be a great match. Puck is a bit of a troublemaker, and Hawkeye has that cool, laid - back but still badass attitude. They could get into some mischief together.
In my opinion, it would probably be Kurt from Glee and Darren Criss (who is associated with Starkid). Kurt is very fashion - forward and has a strong passion for performing arts. Darren Criss is known for his incredible talent in Starkid productions. Their shared love for music and the stage would likely draw them together first.
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.
Obviously, Peggy and the Avengers are the key characters. Among the Avengers, Captain America would be a central figure in the interaction as he and Peggy have a pre - existing relationship.
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.
Definitely Iron Man. He's one of the most iconic Avengers. Captain America would also be a must - have. And Thor, with his godly powers. Black Widow and Hawkeye would add the human element to the team. Then there could be characters from other parts of the Marvel universe like Doctor Strange who could help with the more magical or other - dimensional aspects.
The Avengers would also have to adjust to the social and cultural norms of Camelot. They can't just barge in and start making demands. Merlin would have to act as a mediator between the two groups. He would explain to the people of Camelot that the Avengers are there to help, and at the same time, he would make sure the Avengers understand the importance of respecting Camelot's traditions. This interaction would create a lot of interesting storylines and character development opportunities.
The Hulk could be a bit of a mystery to Sherlock. He would be intrigued by the dual nature of Bruce Banner and the Hulk. Sherlock might try to find a way to control the Hulk's transformations through his scientific knowledge and understanding of human psychology. Meanwhile, the Avengers would be both amused and impressed by Sherlock's unique methods.
The characters could interact through a shared mission. For instance, if there's a threat that endangers both the wizarding world and the world of the Avengers, they would have to work together. Harry could use his knowledge of magic to assist the Avengers in understanding the more mystical aspects of the threat, while the Avengers could use their combat skills and technology to fight the more physical parts of the enemy.
Definitely Harry Potter and Finn Hudson. Harry is the hero in the wizarding world, and Finn is a key figure in the Glee club. They could bond over their leadership roles. Harry could teach Finn some magic tricks, and Finn could show Harry how to be more confident while performing in front of a large audience.
Jade West from 'Victorious' and Stef from 'The Fosters' might also be a great pair to interact. Jade is tough and outspoken, and Stef is a strong - willed woman. They could start off butting heads but then find common ground and respect for each other. Maybe they both have to deal with some kind of troublemaker in their respective communities and end up sharing strategies.