The Avengers would most likely rally around Tony. Clint could offer his friendship in a more profound way, like being there for Tony during his nightmares. They might also start to see Tony in a new light. His sometimes brash behavior could now be seen as a defense mechanism. And they would work together to make sure Tony gets the help he needs, whether it's through therapy or just having a support system within the team.
It really depends on the specific fanfiction. Some writers might explore such a dark and controversial theme, while others won't. Fanfiction is highly diverse and can take all kinds of creative directions.
In some fanfictions, Tony might be kicked out of the Avengers because of a conflict in leadership styles. Maybe his high - tech and sometimes risky solutions don't sit well with other members who prefer more traditional or cautious approaches. For example, if a mission goes wrong due to one of his untested inventions, the team could lose faith in his decision - making abilities.
The Avengers finding out Tony is married in fanfiction could create a whole new set of storylines. For example, if Tony's marriage was a result of some kind of arranged situation, the Avengers might get involved in trying to figure out if it's a good or bad thing for Tony. Or if his spouse has a hidden power or identity, it could bring danger to the team, and they'd have to deal with that. There could also be relationship drama within the team, like jealousy from a character who has an unrequited love for Tony. This discovery could be a catalyst for many different plot twists and character developments.
Bruce would probably be more analytical. He might wonder how Tony's marriage could affect his work and the team. He could also be curious about Tony's relationship dynamics. Meanwhile, Wanda might sense the emotions involved, like Tony's happiness or any underlying stress in the relationship. And Rhodey would likely be supportive, since he's Tony's close friend. He might even help Tony deal with any potential issues that come up with the Avengers' reactions.
Thor could be angry. He's a proud warrior and being kicked out like that might be seen as an insult. He might even challenge Tony in some way, either verbally or physically. However, he also has a sense of honor and might listen to Tony's reasons if given the chance.
There might be some. You can start by looking on fanfiction websites. Some writers may explore the idea of Tony Stark being in an abused situation in creative ways to add depth to his character, but the quality can vary a lot.
Peter might be really nervous at first. He's used to being just the friendly neighborhood Spider - Man, and now the Avengers know he's Tony's son. He could be worried about living up to their expectations.