Another plot could be centered around Peter uncovering secrets about Bucky's past. As he digs deeper, he discovers things that not only change his perception of his father but also put him in danger. This could lead to a journey where he has to protect Bucky from old enemies while also coming to terms with who his father really is.
Perhaps the story could explore the relationship between Peter and the other Avengers. Since Bucky has his own history with the team, Peter might face some acceptance issues at first. But as he proves himself, he becomes an integral part of the group. He could also inherit Bucky's past traumas in some way and have to deal with them while still being a hero.
One possible plot could be that Peter grows up with Natasha's skills and values. He might be trained by her in combat and espionage. For example, he could learn how to use different weapons and how to deceive enemies just like Natasha. Maybe they go on secret missions together, with Peter gradually proving himself as a worthy heir to Natasha's abilities.
Well, one possible plot could be Peter growing up in Asgard. Maybe he has to deal with the expectations of being Loki's son. He might inherit Loki's mischievous nature but also has his own sense of justice, which could lead to conflicts with the more traditional Asgardian values.
One possible plot could be Peter growing up in Asgard, learning the ways of the Asgardians and struggling to control his powers which are a mix of his own and those he might inherit from Thor.
One plot twist could be that the villains find out about Peter's newfound relation to Bucky before Peter and Bucky themselves do. They could then try to use this information to manipulate Peter or turn him against Bucky. Another twist might be that there is some sort of time - travel or alternate reality involved, and in this new reality, Bucky is Peter's father, but it was never meant to be in the original timeline. This would make Peter question his entire existence and his place in the multiverse.
Another theme could be redemption or healing. Bucky has his own troubled past, and Natasha also has a complex history. Having Peter as their son could be a way for them to find a new purpose and heal from their past traumas. The fanfiction might explore how they become better versions of themselves through their relationship with Peter, and in turn, how Peter helps them in this process.
His sense of loyalty would be strongly influenced by Bucky. Bucky is known for his loyalty to Steve, and Peter would inherit this trait. He would stand by his friends and family no matter what. Also, his combat skills would progress rapidly under Bucky's tutelage. He'd become a formidable fighter at a young age, and this would boost his confidence but also make him a target for villains.
One possible plot could be Peter growing up in the Stark mansion, having access to all of Tony's technology. He might start inventing things at a very young age. And when he gets his spider - powers, Tony could be more directly involved in helping him develop his suit and his skills as a superhero.
Well, it could be that Peter discovers his true identity as Tony's son through some hidden documents or a revelation by an old acquaintance of Tony's. Maybe he has some special powers that are linked to Tony's technology, and as he uncovers his relation, he also has to face the enemies that were once after Tony.
One common theme is the discovery of their relationship. Peter might find out in a shocking way that Bucky is his father. Another is the protection aspect, with Bucky using his skills to keep Peter safe. Also, there's often the theme of family acceptance, as they both come to terms with their new - found family bond.
Sure. I've come across a couple. In these fanfics, they often play with the idea of Bucky having a secret family or Peter finding out about his true heritage. One story had Bucky trying to protect Peter from his own dark past while Peter was eager to learn from his father. It was really engaging.