Well, the other Avengers might rally around him. They could try to find a way to revive him or figure out what caused his collapse. Maybe Bruce Banner uses his scientific knowledge to run tests on Tony.
The story could develop in a way that Tony's collapse makes the Avengers realize their vulnerability. They might then start to train harder or seek new allies. On a more personal level, if Pepper was around when he collapsed, she could take over Stark Industries temporarily and use its resources to find a solution for Tony. And perhaps Tony, while in a coma or weakened state, has some sort of vision or spiritual journey that gives him new insights when he wakes up, which then changes the course of the story.
The story might develop in a way that Tony Stark realizes he made a mistake. He could start to miss the camaraderie and the combined strength of the Avengers. On the other hand, the Avengers could form a new group with a different name and mission statement. They might start to oppose Tony's actions and decisions, creating a sort of rivalry. This could lead to epic battles or intense negotiations between Tony and the new group. And in the process, both sides could learn important lessons about friendship, leadership, and the importance of working together.
When Tony Stark time travels, especially to difficult times in history or the future, his character often develops in terms of his sense of responsibility. He might see the consequences of his actions on a larger scale. For instance, if he travels to a future where Earth is in a post - apocalyptic state because of some technology he created, he becomes more cautious and more committed to using his inventions for the greater good. He starts to think about the long - term effects of his actions rather than just the short - term gains. This transformation in his character makes him a more complex and relatable figure in the fanfic.
It changes the dynamics completely. Tony Stark as a cat can't physically do the things he normally does as a human. So, it forces other characters to step up in different ways. For instance, Rhodey might have to take on more of the technological leadership in the group. Also, it can make the story more light - hearted as the Avengers deal with a cat - sized Tony Stark running around and getting into mischief.
Well, his friends or colleagues might immediately rush to his aid. Pepper Potts, for example, could call for medical help. Then, the story might shift to the investigation of what caused the fainting. If it was an attack, they would start looking for the perpetrator. If it was due to overwork, his friends would probably try to make him take it easy.
Another way the story can develop is that the remaining Avengers try to win Tony back. They realize their mistakes and make efforts to reconcile with him. This could involve a lot of emotional scenes and character growth for both Tony and the other Avengers.
Often, the plot may focus on his recovery. There could be a race against time to find a cure or treatment if the bullet was poisoned or had some alien tech in it. Maybe he has to rely on some experimental medical technology that he himself had been researching but not fully developed yet.
Tony would probably be extremely hurt. He trusted his team, and betrayal would cut deep. He might initially be in denial, not wanting to believe that his friends could turn on him.
In some fanfictions, their relationship deepens as they face new challenges together. The events of the Avengers might have made them realize how much they need each other. So they become more supportive and understanding of one another. For example, Tony might be more open with Pepper about his fears and insecurities.
As he leaves, he could face challenges on his journey. Maybe some villains try to take advantage of his vulnerable state during the move. He has to use his wits and some basic tech he has with him to fend them off.
Yes, it's possible that Tony Stark, as a character, could be the subject of Avengers fanfiction that he might 'watch' in the sense of being a character within the fictional scenarios written by fans. However, in the official Marvel universe, there's no indication of him actually reading Avengers fanfiction.