Often, there's a theme of using his skills. His medical knowledge and deductive reasoning are put to use in the Avengers' context. Also, there can be a theme of culture clash. John Watson comes from a different sort of world in the Sherlock Holmes stories, and his values and ways of doing things might clash or blend with the Avengers' way of life.
One common theme is the struggle with identity. As a vampire, John has to reconcile his new vampiric self with his old identity as a doctor and a friend. Another theme is the relationship with Sherlock. It often becomes more intense and complicated due to his vampiric nature.
One common theme is the exploration of gender roles. Since John is female in these fictions, it often looks at how she navigates a world that was originally male - dominated in the Sherlock Holmes canon. Another theme is relationships, like her friendship with Sherlock or potential romantic relationships. Also, the theme of her proving herself in a male - dominated field, such as detective work, is quite prevalent.
One common theme is friendship. Writers often explore how an original character can form a deep and meaningful friendship with Watson. It could be a friendship that helps Watson through tough times or one that adds a new dimension to his life.
Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own. There are stories that might bring John Watson into the Avengers universe in really interesting ways, like making him a consultant for the team due to his medical and detective skills.
One common theme is adventure. Since John Watson is often associated with Sherlock Holmes and their detective work, the fanfictions might involve the reader going on adventures with him, solving mysteries. Another theme is romance, of course, as it's 'x reader' so there's usually a romantic element between the reader and John Watson.
One common theme is the deepening of their friendship. Many fanfictions explore how they become closer and more reliant on each other over time. Another theme is mystery - solving together. They are often depicted as an unbeatable team in solving complex cases. And of course, there's the theme of loyalty. Their loyalty to each other is a central aspect in a lot of these fanfictions.
One common theme is the unspoken attraction. In these fanfictions, there's often a lot of tension between Holmes and Watson because they can't immediately act on their feelings. Another theme is loyalty, which is a big part of their relationship in the original stories and is intensified in the yaoi versions.
One common theme could be mystery. Russia has a rich history and many mysterious elements, so fan fictions might involve John Watson getting caught up in some sort of mystery there, like an old Cold War - era secret.
One common theme is their interaction within the complex world of Sherlock Holmes. They might be shown collaborating on a case that Sherlock is also involved in, or dealing with the consequences of Sherlock's actions. Another theme could be their own personal relationship, perhaps exploring how they view each other outside of their connection to Sherlock.
In many of these fan fictions, the theme of mystery plays a big part. Since Moriarty is such a mysterious figure, the stories often revolve around uncovering his motives and plans. There's also the theme of good versus evil. Watson represents the good side, trying to stop Moriarty's evil schemes. And the idea of self - discovery for Watson is also common. Through his encounters with Moriarty, he learns more about his own capabilities and limitations.