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.
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.
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.
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.
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.
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.
One possible scenario is that Spider - Man, now as Venom, has to face new and different villains. His powers have changed, so the way he battles foes would be different too. He might have an advantage against some villains who were previously difficult to defeat, but at the same time, he could also attract the attention of more powerful enemies who see the Venom - powered Spider - Man as a greater threat.
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.
It could lead to some really intense battles and power shifts. Spider-Man might have new abilities and face even tougher challenges.
The Green Goblin would be a great choice. He's always been one of Spider - Man's most dangerous foes. With Spider - Man unmasked, the Green Goblin could use this to his advantage, attacking not just Spider - Man but also those close to him, knowing that Spider - Man will be more vulnerable because he has more to lose now.
One exciting plot twist could be that Venom actually has a change of heart. Maybe he realizes that he and Spider - Man are both victims in a way, and they end up teaming up against a bigger threat. Another could be that Spider - Man gets infected by a different symbiote that makes him even more powerful, but also more unpredictable, and now Venom has to decide if he wants to fight this new version of Spider - Man or join him.