Well, it could involve the Avengers getting lost in our world and finding the cast of the Avengers movies. The actors might think it's some sort of elaborate prank at first. Then, they could team up. The Avengers could learn about how they are portrayed in the movies from the actors, which could lead to some humorous or even heartwarming moments.
The Avengers might be initially cautious around the cast, not fully understanding who they are. The actors, on the other hand, would probably be star - struck. For example, Robert Downey Jr.'s character in real life might try to crack jokes with Iron Man. And Thor might be a bit confused by the concept of actors playing him.
Iron Man and Robert Downey Jr. would likely have interesting interactions. Iron Man is known for his wit and charm, and Downey Jr. has a similar personality. They could exchange some clever banter and perhaps even discuss how Iron Man's character has evolved over the movies.
One idea could be that the Avengers are accidentally transported to a movie set where the cast is filming their story. They initially think it's some kind of new villain's trick. Another could be that the cast members get to experience the powers of the Avengers for a day through a magical mishap.
I would cast Tom Hiddleston as the main villain. He has already played Loki in the MCU and has proven his ability to be a complex and engaging villain. His charm and acting skills could bring a new level of menace to an Avengers fanfiction.
I think 'avengers meet the seven fanfiction' might be a fan - created story where the Avengers and the Seven cross paths. It could explore things like cultural differences between the two groups if they are from different fictional settings. For example, the Avengers' values from the Marvel world and whatever values the Seven hold. It might also show how their different abilities work together or against each other in various scenarios like a big battle or a mission to save a world that is in danger due to some common enemy.
Well, in this 'avengers meet frigga fanfiction', it could center around Frigga using her magic to help the Avengers in some way. She might be a key to solving a mystery that the Avengers are facing. For example, she could have knowledge about an ancient artifact that the bad guys are after, and she teams up with the Avengers to keep it safe. Also, there could be some emotional moments as the Avengers, who have lost so much, find a mother - like figure in Frigga.
The Avengers might react in different ways. Steve Rogers would probably be polite but firm in getting to know Peter's boyfriend. He'd want to ensure that he was a good influence on Peter. Thor, on the other hand, might be a bit more boisterous. He could either be really friendly and enthusiastic, or his loud and powerful presence might accidentally scare the boyfriend a bit.
In such a fanfiction, Peter could show off his unique skills to the Avengers. Maybe he'd surprise them with his agility and quick thinking. For example, in a battle scenario, he could use his web - slinging abilities to outmaneuver enemies that the Avengers are having trouble with.
In this fanfiction, it's possible that a new threat emerges that forces the Avengers and the demigods to work together. The demigods could bring in their knowledge of mythology and ancient prophecies, while the Avengers contribute their strategic thinking and combat experience. There could be interesting character interactions, such as Iron Man trying to figure out the technology behind the demigods' powers or Captain America inspiring the demigods with his sense of justice and leadership.