A great fanfiction idea could be that Spider - Man and Nightwing meet at a superhero convention. They both go there in civilian guise, but they sense something different about each other. Later, when trouble breaks out at the convention, they reveal their identities and work together to stop the bad guys. This would be a fun way to show their different personalities in a non - combat situation first.
Maybe in the fanfiction, there's a multiverse - related event that causes portals to open between their worlds. Spider - Man accidentally falls through one into Gotham. Nightwing is the first to find him. They have to figure out how to get Spider - Man back home while also dealing with the villains who are trying to take advantage of the chaos. This could involve a lot of action scenes as well as some emotional moments when they talk about their respective families and the responsibilities they carry.
Another idea is that there's a new super - villain who has the ability to steal powers. This villain targets both Spider - Man and Nightwing. They meet while trying to track down this villain. At first, they are distrustful as they think the other might be the villain in disguise. But as they start to work together and share information, they realize they are on the same side. They then combine their skills and resources to take on the power - stealing villain and get their powers back in a final epic showdown.
One possible plot could be that they team up to stop a powerful villain who has the ability to travel between their two cities. Maybe this villain is stealing tech from Gotham and super - powers from New York. They start off not trusting each other as they have different methods. Nightwing is more stealthy and trained in combat, while Spider - Man is more quippy and uses his webs in a very acrobatic way. But as they face challenges together, they learn to work as a team and combine their skills to take down the bad guy.
Well, if Spider - Man meets Nightwing in a fanfiction, there could be a lot of cool things. They might team up to fight a common enemy in Gotham or New York. Maybe they start off a bit wary of each other because they come from different universes and have different ways of operating. But then they realize they can learn from each other. Spider - Man could teach Nightwing about his acrobatic web - slinging skills, and Nightwing could show Spider - Man some of his detective skills.
Maybe in the 2018 fanfiction, the 2023 Spider - Man meeting could be a reunion of all the Spider - Man versions from different universes. They might come together to fight a new and powerful villain that threatens all the universes.
Perhaps the 2023 Spider - Man meeting in the 2018 fanfiction is about a celebration of the victory over a major villain. They come together to honor those who have fallen in the battle and to ensure that the peace they've achieved is maintained. They might also discuss how to prevent the rise of new villains in the future.
Well, perhaps Spider - Man could team up with a new character from the Oast in this fanfiction. Maybe they'll fight a common enemy together.
Perhaps in a fanfiction, Venom is actually a creation of one of the villains in Homecoming who wants to use it to defeat Spider - Man. But the symbiote has a mind of its own and instead starts to have an odd connection with Spider - Man, leading to a complex relationship where they have to figure out if they can trust each other.
One idea could be that Spider - Man has to save Zootopia from a new villain. Maybe a super - intelligent criminal who has found a way to control the minds of some of the animals. Spider - Man would have to use his web - slinging skills and his intelligence to stop this villain without causing too much chaos in the city of anthropomorphic animals.
A fanfiction could be about a scientific experiment gone wrong that gives Batgirl some of Spider - Man's powers, like the ability to stick to walls. She then has to learn to control these new powers with Spider - Man's help, all while facing off against a villain who wants to steal her new powers for their own evil plans.
There could be a situation where a Transformer's technology gets mixed with Oscorp's experiments. This creates a new kind of threat that Spider - Man has to face. The Transformers get involved because it's their technology that's been misused. Together, they figure out a way to reverse the effects and defeat the new hybrid - like villains.
One idea could be a crossover where Spider - Man gets accidentally transported to the Teen Titans' universe. He teams up with them to fight a common enemy, like a super - villain who has the ability to manipulate time. They combine their powers and skills, with Spider - Man's agility and web - slinging and the Teen Titans' diverse powers.