Love and Romance. Most of these fanfics focus on the developing relationship between Peter and the reader. It can be a slow - burn love or a sudden attraction.
One common theme is mentorship. Since Peter is often seen as the younger, more inexperienced hero, the Avenger reader can act as a mentor, guiding him in the ways of the superhero world.
Love and support is a very common theme. MJ is often shown as a pillar of strength for Peter, and he in turn gives her a sense of adventure. For example, in many fanfics, MJ stands by Peter during his tough times as Spider - Man, whether it's dealing with a powerful villain or his own self - doubts.
Friendship is a very common theme. Peter Parker is often portrayed as forming a deep and meaningful friendship with the male reader. They support each other, have each other's backs, and grow together. Another theme is discovery. The male reader may discover Peter's secret identity, or Peter may discover something unique about the male reader. Adventure is also common. They go on adventures together, whether it's fighting crime in New York or exploring some mystery.
One common theme is mentorship. Tony often acts as a mentor to Peter, guiding him in the world of superheroes and advanced technology.
One common theme is the 'fish out of water' situation. Since Yelena has a very different background from Peter, their interactions can create interesting scenarios where they learn from each other's worlds. For example, Yelena's assassin training contrasting with Peter's more altruistic superhero upbringing.
One popular theme is the 'Secret Identity' aspect. The reader often discovers Peter's alter - ego as Spider - Man in a very dramatic or comical way, which then leads to various plot developments.
One common theme is justice. When Peter is angry, it's often because he sees an injustice. For example, if an innocent person is hurt or if a villain is getting away with a crime.
One common theme is redemption. Peter B. Parker often has to face his past mistakes and try to make up for them. For example, in many fanfics, he might have failed in a relationship in the past and is now trying to be a better person for it.
A common theme is the struggle for control. The symbiote has its own will, and Peter often has to fight to keep it in check. For example, in many fanfics, he battles with the symbiote's urge to be more violent.
One common theme is loss. Whether it's the loss of a loved one like Uncle Ben or a close friend, it often leads to Peter breaking down in tears. It's a way to explore his human side and how he deals with grief.