Well, in some fanfiction, there might be a plot where Ultimate Spider - Man has to prove himself to the Avengers. Maybe he's initially not trusted by some members like Iron Man, who doubts his abilities due to his young age. But as the story progresses, Spider - Man shows his true worth by using his street - smart tactics and amazing spider - powers to save the day during a big attack on the city. This kind of dynamic between the inexperienced but talented Spider - Man and the more established Avengers can create a lot of interesting storylines.
One interesting crossover could be a story where Spider - Man teams up with the Avengers to take on a powerful new villain that neither could defeat alone. For example, a symbiote - enhanced foe. Spider - Man's agility and unique powers combined with the Avengers' diverse abilities would make for an exciting battle.
One interesting crossover could be Spider - Man using his agility to outmaneuver the Hulk during a battle in a fanfiction. His webs could be used to slow down the Hulk's rampage.
One interesting crossover could be Ben and Spider - Man teaming up to fight a common villain like Venom. Ben could use his various alien forms to take on Venom in different ways, while Spider - Man uses his web - slinging and acrobatic skills.
One interesting crossover could be Spider - Man using his agility and web - slinging skills to help the Avengers in a city - based battle. His ability to move quickly through the skyscrapers can give the Avengers an edge in a fight against villains who are causing chaos in a metropolis.
One interesting crossover could be the team - up of Spider - Man with Iron Man. They could combine their tech - savvy skills, with Spider - Man's agility and Iron Man's high - tech suits to take on a powerful villain. Maybe they create a new type of web - shooting device together.
One idea could be that Spider - Man has to use his unique street - level skills to help the Avengers in a mission where they are facing a villain who can manipulate technology in a city. His agility and quick thinking can give the Avengers an edge in the narrow alleys and on top of skyscrapers.
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.
One interesting crossover is 'When Worlds Collide'. In this fanfiction, the universes of Iron Man and Spider - Man somehow get merged. This leads to some really unique situations, like Spider - Man having to deal with Iron Man's high - tech world in a whole new way. Another is 'The Tech - Web Alliance'. Here, they form an alliance to fight a villain who is using both high - tech and some sort of web - related powers. It's a really cool concept that combines their two skill sets.
One interesting crossover could be Naruto's chakra system being studied by Spider - Man 2099's advanced scientific mind. Maybe he could find a way to use chakra - like energy in his web - slinging or combat. Another could be Naruto teaching Spider - Man 2099 some of his ninja skills, like stealth or hand - to - hand combat techniques. And a really wild one could be a fusion of their powers, where Spider - Man 2099 has some of Naruto's nine - tailed fox power in his enhanced form.
One interesting crossover could be where Spider - Man finds himself in the Twilight world. Maybe he has to deal with the vampires and werewolves while trying to keep his identity a secret. He could use his web - slinging skills to navigate the forests of Forks.
One interesting concept could be alternate versions of Spider - Man's powers. Maybe in the fanfiction, he has a new web - shooting ability or enhanced strength. Another concept might be different relationships. For example, a unique friendship or rivalry with other characters like Venom or Doctor Octopus. Also, the setting could be changed, like a futuristic New York City where Spider - Man has to adapt to new technologies and threats.