In fanfiction, there are so many directions it could go. The doppelganger could be from an alternate universe. They might have a different personality, like being more aggressive or more cautious. Peter Parker would have to figure out if he can trust this other version of himself. There could be a struggle for identity too. Is the doppelganger trying to take over his life? Or are they there to help? It could lead to a complex and interesting story full of drama, action, and self - reflection.
The doppelganger could be a clone of Peter created by some mad scientist. The clone has Peter's memories up to a certain point but then has been programmed with different motives. So when they meet, Peter has to figure out how to deal with this exact copy of himself that has been turned into a tool by someone else.
In the 'Peter Parker meets his parents fanfiction', perhaps his parents turn out to be superheroes in their own right. They could team up with Peter to fight a common enemy. This would not only strengthen their family bond but also give Peter a new perspective on his powers and his place in the world.
In the 'Peter meets his doppelganger fanfiction', perhaps the doppelganger has a different personality. Peter is friendly and outgoing, but his doppelganger is more reserved. This causes a lot of misunderstandings at first. But as the story progresses, they discover that they have some common goals, like protecting their neighborhood from a new threat. So they put aside their differences and work together.
In a 'Peter Parker meets Shuri' fanfiction, they could team up to fight a common enemy. Maybe a new super - villain emerges in both their worlds and they combine their unique skills. Peter with his spider - abilities and Shuri with her brilliant Wakandan technology.
Well, Deadpool might crack a lot of jokes and make Peter Parker super confused. He could also try to team up with Peter to fight some villains, but his crazy methods would probably drive Peter nuts.
In a 'Peter Parker meets Loki' fanfiction, they might start as adversaries. Loki could see Peter as a new and interesting target to play his tricks on. Peter, on the other hand, would be initially cautious but also curious about this Asgardian. Maybe Loki would try to use Peter's naivete to his advantage, but Peter's Spider - Sense would keep him on guard. Eventually, they could end up teaming up against a common enemy, like some powerful interdimensional villain.
Well, Loki might see Peter as a new toy to play with. He could mess with Peter's life by using his illusions, like making Peter think his friends and family are in danger. Peter, of course, would try to fight back and save them. This would lead to a chase around the city, with Loki leaving false trails and Peter using his spider - abilities to track him down.
Perhaps in this fanfiction, Peter Parker meets the Defenders when they are all investigating the same strange occurrences in the city. There could be a mystery involving some sort of strange energy or new type of criminal organization. The Defenders with their unique skills and Peter with his spider - powers would start to piece together the clues. Along the way, they would have to overcome their differences in approach. For example, Peter is used to working alone most of the time, while the Defenders are a team. But in the end, they would combine their forces to solve the mystery and protect the city.
Well, in such a fanfiction, Peter Parker might use his superhero abilities to protect the president from some sort of threat. Maybe a supervillain is targeting the president, and Peter swings in to save the day.
In this fanfiction, Peter Parker might show off his amazing spider - abilities to the Avengers. Maybe he'll swing around the Avengers Tower impressing everyone.