Well, it might show Spider - Man struggling not only with Venom physically but also with the emotional turmoil of being unmasked. His friends and family might be in danger, and he has to find a way to protect them while dealing with the public knowing who he is. Maybe he tries to convince the public that he's still on their side even though his identity is out.
Obviously, Spider - Man and Venom are going to be the main characters. Spider - Man is the one being unmasked, and Venom is the one doing the unmasking.
Well, in Avengers fanfiction where Spider - Man is unmasked, one possibility is that his identity revelation could lead to a divide among the Avengers. Some might trust him more fully, seeing his young and vulnerable self behind the mask. Others could be worried about the danger it poses to him and the team, as his enemies now know who he is. For example, Iron Man might take on a more protective role towards Peter Parker, while Captain America could be concerned about the security risks.
In fanfiction, if Spider - Man turns into Venom, he might initially struggle with the new, darker impulses. Venom's symbiotic nature could make him more aggressive. He could find it hard to control his actions, like being more prone to using excessive force against villains. His relationships would also change. His friends might be scared of him at first, and he'd have to prove that he's still the good guy inside.
In fanfiction, when Spider - Man reunites with Venom, they might have an epic battle at first. But then, they could realize they have a common enemy and team up. For example, a new super - villain could emerge in the city, threatening both of them and the innocent people. Their combined powers, Spider - Man's agility and Venom's brute strength, would make them a formidable force against the bad guy.
It could lead to some really intense battles and power shifts. Spider-Man might have new abilities and face even tougher challenges.
In the fanfiction where Spider - Man is captured by Venom, he could be used as a bargaining chip. Venom might try to use Spider - Man to get something from the Avengers or other superheroes. Spider - Man would be constantly thinking of ways to break free. He might also try to communicate with Venom, to understand what makes him so angry and vengeful, and in the process, find a weakness to exploit. It would be a battle of wills as much as a physical struggle.
One idea could be that Peter Parker decides to unmask himself as a political statement during the Civil War. He might feel that the secrecy in the superhero community is causing more harm than good and by unmasking, he hopes to start a new era of transparency among heroes.
In the fanfiction where MCU Spider - Man and Venom meet, Spider - Man might initially be terrified of Venom. After all, Venom is this big, hulking, and somewhat menacing figure. However, as the story progresses, they could start to understand each other. Venom could realize that Spider - Man isn't just some weakling, and Spider - Man could see that Venom has his own motives that might not be entirely evil. They might then form an uneasy alliance.
One possible fanfiction could be about Venom finding its way into the Spider - Verse. Maybe it starts when a symbiote experiment in an alternate dimension goes wrong and Venom is accidentally sent into the Spider - Verse. He could encounter different versions of Spider - Man and create chaos as he tries to find a way back to his own dimension. He might initially be seen as a threat by the Spider - People, but as the story progresses, they could realize that he's just lost and confused.
Definitely Mary Jane. If Spider Man is unmasked, her reaction would be crucial. She has always been an important part of his life, and her response could range from shock to immediate acceptance and support. Another great character is J. Jonah Jameson. His reaction to Spider Man's unmasked identity would be quite entertaining, as he has always been on the fence about Spider Man, sometimes seeing him as a menace and other times as a hero.