It could be that a villain has almost completely destroyed the Avengers, but they rise from the ashes stronger. The fanfiction might focus on how they overcome their past failures, the individual struggles of each member during this rebuilding phase, and how they finally take on the villain again with a newfound unity and strength.
One possible plotline could be about an Avenger who was thought to be dead rising from the ashes, literally or metaphorically. Maybe they come back with new powers or a changed perspective, and they have to find their place within the team again.
There might also be some secondary characters from the Marvel universe that play significant roles. For example, Nick Fury could be involved in guiding the Avengers as they try to rise again. Or characters like Doctor Strange might make an appearance to offer his magical expertise in helping the Avengers rebuild and face whatever threats are out there.
One interesting plotline could be Wolverine having to team up with the Avengers to stop a powerful mutant - created virus that threatens to wipe out both mutants and non - mutants alike. He brings his unique combat skills and healing factor to the table, while the Avengers contribute their various superpowers and high - tech resources.
One interesting plotline could be the return of a long - lost Avenger who has been in hiding or captivity. For example, they might come back with new powers or a different perspective, causing a shift in the team dynamics.
Another plotline might involve Loki getting caught in a time - loop within an Avengers - related adventure. He keeps reliving the same day, and each time he has to interact with the Avengers in different ways to try and break the loop. This could lead to some really comical and also tense situations as he tries to figure out what's going on while the Avengers are getting increasingly suspicious of his behavior.
There are many. Some might focus on character backstories not fully explored in the original. For example, a fanfiction could delve into the early days of a character's training.
Perhaps a plotline where the Avengers from different universes have different moral compasses. Some might be more ruthless in their methods of dealing with the multiverse collision. This could lead to internal conflicts within the newly - formed multiverse Avengers team. They would have to figure out how to work together despite their differences while also trying to save all the universes involved.
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.
She could be a super - spy too, but on a different side initially. Maybe she was brainwashed by a shadowy organization. Natasha then has to fight her sister while also trying to bring her back to her senses. It would be a story full of action and emotional turmoil.
One interesting plotline could be an OC (Original Character) with special powers that can counter Ultron's technology. For example, an OC who can manipulate energy in a way that disrupts Ultron's programming. Another could be an OC who has a past connection to Ultron's creator, Tony Stark, and this connection plays a role in the battle against Ultron. Maybe the OC was an experiment gone wrong in one of Stark's early projects related to artificial intelligence.
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.