Well, in some 'Avengers adopt Peter fanfic', a great plotline is when the Avengers discover Peter's identity and decide to take him in. They start to teach him things like how to better control his powers. There could be a plot where Peter has a falling out with one of the Avengers, like Thor perhaps, over a misunderstanding about how to use his powers in a certain situation. Then they have to work through it and become closer as a family.
One interesting plotline could be Peter struggling to fit in with the Avengers' high - tech and super - powered world while still maintaining his normal life as a high school student. For example, he might have trouble keeping up with the Avengers' training schedules while also studying for exams.
A common plot is the Avengers protecting Peter from his enemies who now see him as an easy target because he's associated with the Avengers. For instance, some of Spider - Man's classic villains might team up to take him down. The Avengers then have to use their combined skills and powers to keep Peter safe. This not only shows the Avengers' loyalty to Peter but also how Peter learns from them in the face of danger.
One interesting plotline could be the reader having a special power that the Avengers initially don't understand. For example, the reader might be able to control time in small bursts. The Avengers, being protective, try to help the reader master this power without it getting out of control. Another plotline could be the reader coming from a difficult background, like being an orphan in a war - torn area. The Avengers adopt the reader and show them a new life filled with hope and family. It could also be that the reader has some sort of connection to an enemy the Avengers are facing, and they have to figure out how to deal with that while still protecting the reader.
One plotline could be Loki initially resisting the Avengers' attempts to adopt him. He might be suspicious of their motives, thinking it's a trick. But over time, as they show genuine care, he starts to open up. For example, Thor could be a key factor in getting Loki to trust the Avengers, as he vouches for their good intentions.
One possible plotline could be the two Peters from different universes teaming up to fight a new threat that the Avengers can't handle alone. Maybe they use their combined spider - powers in unique ways.
Obviously, Peter Parker is one of the main characters. And then, the Avengers members like Tony Stark, Steve Rogers, Natasha Romanoff, etc. are also main characters as they are the ones adopting Peter. They play important roles in Peter's new life and in the overall story.
One interesting scenario could be Peter impressing the Avengers with his quick thinking during a battle. For example, he uses his web - slinging skills in a unique way to outwit an enemy that the Avengers were having trouble with.
One interesting plotline could be Peter using his gaming skills to enhance his Spider - Man abilities in the fanfic. For example, he might use strategic thinking from games to outwit villains more effectively.
One interesting plotline could be the Avengers having to deal with alternate versions of themselves that are brought into their universe during the events of No Way Home. It could lead to some really cool team - up and fight scenes.
Tony Stark is really popular. He often takes on a mentor role to Peter, using his intelligence and resources to help Peter become a better superhero. Another popular character is Steve Rogers. His sense of justice and leadership can inspire Peter. And of course, Peter himself is central. Readers love to see his growth and development as he interacts with the Avengers.