Identity is a theme that comes up a lot too. Spider - Man is used to being a solo hero in his own neighborhood, and suddenly he's part of this big, global team. He has to figure out how to maintain his own identity while also being a part of the Avengers. And the Avengers have to learn to trust this masked hero with their secrets and operations.
One interesting storyline could be Spider - Man teaming up with the Avengers to fight a new super - villain that's a combination of different powers they've faced before. For example, a villain with the strength of the Hulk and the mind - control abilities of Loki.
One common theme is the clash of different cultures. Naruto comes from a world of ninjas with its own values and traditions, while the Avengers are from a more modern, superhero - filled world. Another theme could be power comparison. Since Naruto is godlike in these fanfics, it's interesting to see how his powers stack up against the Avengers' abilities.
One great Spider - Man Avengers crossover fanfic is 'The Webs of the Multiverse'. It has an amazing plot where Spider - Man from different universes teams up with the Avengers to fight a powerful, multiversal threat. The character interactions are really well - written, especially the banter between Spider - Man and Iron Man.
One idea could be that during a mission crossover, Spider - Man gets injured while trying to protect a civilian from an unexpected attack by a powerful enemy. Maybe he takes a hit meant for an Avenger and his suit's technology malfunctions, leaving him vulnerable.
The Avengers would be very concerned. Captain America would immediately take charge of the situation, trying to keep everyone calm while they assess Spider - Man's injuries. Iron Man would start scanning for the best way to treat him, using his high - tech equipment. Thor might offer some of his Asgardian knowledge of healing, if there was any. Black Widow and Hawkeye would be on guard, making sure there were no further threats while the team focused on Spider - Man.
The Avengers might have a range of reactions. Tony Stark could be amused and might make some sarcastic comments about the plot or the way Spider - Man is portrayed. Steve Rogers might be a bit more traditional in his view, perhaps finding it interesting how the fanfic explores different aspects of Spider - Man's character. Thor could be a bit confused at first but then find the whole idea of a fan - created story quite fascinating.
Well, Tony Stark might be amused and start making sarcastic comments about the plot or the characterizations in the fanfic. He'd probably find some of the more out - there ideas in the fanfic either really cool or just plain ridiculous.
One common theme is the clash of different universes or worlds. For example, when Iron Man crosses over with a fantasy world like Middle - earth, his high - tech gadgets seem out of place among the magic and swords. Another theme is the cooperation or rivalry between Iron Man and the characters from the other franchise. In a crossover with the Avengers and another team like the Justice League, there's often a power struggle or a need to work together to face a bigger threat.
One possible plot could be that Spider - Man gets accidentally transported to the Avengers' headquarters. He has to prove himself to the Avengers at first, since they don't really know him well. Then, they discover a common enemy that is planning to attack both New York City (Spider - Man's territory) and other major cities around the world that the Avengers protect. Together, they combine their powers and skills. Spider - Man's agility and spider - sense work well with Iron Man's technology, Captain America's leadership and combat skills, Thor's godly strength, etc. They have to overcome their differences in fighting styles and strategies to defeat the enemy.
Another storyline might involve Spider - Man bringing in his street - level knowledge to the Avengers. Since he deals with small - time criminals in New York on a daily basis, he could help the Avengers understand the ground - level threats that they sometimes overlook. This could lead to a mission where they have to stop a group of villains who are using the city's infrastructure in a devious plot.