One great crossover could be a story where She - Hulk and Spider - Man team up to take on a powerful new villain in New York City. Maybe a villain with the ability to manipulate technology and they have to use their combined strength and agility to stop him. Another could be a more comical crossover where Spider - Man accidentally swings into She - Hulk during one of her law - related outings, leading to some chaotic and funny misunderstandings as they figure out how to work together.
There could be a fanfiction where Spider - Man, known for his acrobatic skills, and She - Hulk, with her brute strength, have to participate in an underground superhero tournament. They initially don't trust each other but as the tournament progresses, they realize they need to combine their skills to defeat the other powerful and often unethical contestants. This would involve a lot of action - packed scenes, some character development as they learn about each other's motives and fears, and ultimately, a victory that cements their new - found partnership.
A possible storyline is that Spider - Man accidentally gets involved in one of She - Hulk's legal cases. Maybe a super - villain is using their powers in a way that blurs the line between legality and super - heroics. She - Hulk has to defend Spider - Man in court, and in the process, they discover a larger conspiracy that they then have to fight against. This would mix the legal drama aspect of She - Hulk's character with Spider - Man's action - packed world.
One great storyline could be She - Hulk and Spider - Man teaming up to take on a powerful new villain in New York City. Maybe a villain who has the ability to manipulate the legal system and is causing chaos for She - Hulk in her day job as a lawyer, while also creating dangerous situations for Spider - Man on the streets. They have to combine their skills, with She - Hulk using her legal knowledge and brute strength, and Spider - Man his agility and web - slinging skills to bring the villain to justice.
One storyline could be Spider - Man and She - Hulk teaming up to stop a powerful villain who is stealing experimental technology from Oscorp. Spider - Man uses his agility and web - slinging skills while She - Hulk uses her super strength. Another could be a story where they get transported to an alternate dimension and have to find their way back home while facing strange new enemies. Maybe they also have to deal with a misunderstanding between them at first, like Spider - Man thinking She - Hulk is too reckless, but then they learn to work together effectively.
One interesting story could be where She - Hulk and Spider - Man team up to take on a new supervillain in New York City. They combine their unique powers, with Spider - Man's agility and web - slinging and She - Hulk's strength, to defeat the bad guy.
Well, in a Steven Universe and Spider - Man fanfiction, there could be a situation where the Infinity Stones from the Marvel Universe are somehow related to the Gems in Steven Universe. Spider - Man gets caught up in this mystery. He teams up with Steven and the other Gems to figure out how these powerful items are connected. Along the way, they face challenges like villains who want to use the combined power of the Stones and Gems for evil. This kind of crossover would bring together two very different but equally fascinating universes.
I'd recommend starting with the most popular ones on websites like Archive of Our Own. They usually have a good summary that can give you an idea if it's the type of story you'll like.
Another interesting plot could be that Spider - Man accidentally gets involved in a legal case that She - Hulk is handling. Since she is a lawyer as well as a superhero. Maybe a case where a superhero's identity has been leaked and they are being sued. Spider - Man is worried about his own identity and She - Hulk has to figure out a way to protect him while also winning the case in court. This would mix the superhero action with the legal drama aspect that She - Hulk brings to the table.
One great Spider - Man and She - Hulk fanfiction is 'The Team - Up'. It has an interesting plot where they have to solve a mystery in New York City together. The way the author writes their interactions is really engaging.
I'm not sure who the absolute best is, but there are some well - known writers in the fanfiction community. Some writers who have a great understanding of both characters' personalities and powers tend to write really engaging stories. You can often find them by looking at the reviews and ratings on fanfiction websites.
In some fanfictions, Ultron might team up with one of Spider - Man's villains, like the Green Goblin. They could create a plan to take over New York. Spider - Man would then have to face this powerful alliance. He might seek help from other superheroes he's associated with, like Iron Man or Daredevil, to combat this new threat.