Well, in a fanfiction scenario, Harry Potter's magical world and Bucky Barnes' superhero world could collide in many ways. Maybe the magic of Harry Potter could be used to heal Bucky's mental and physical scars. For example, a spell like 'Episkey' might be used to fix some of his physical wounds. And Bucky could introduce Harry to the concept of modern technology and warfare, which would be completely new to Harry.
In this fanfiction, the story could also focus on how the three elements interact on a character - development level. Harry, being a wizard, has a certain level of arrogance and naivete at times. Bucky, with his tortured past, is a more cynical character. The Sentinels represent a force of destruction and control. Harry might start to question his own power when faced with the technological might of the Sentinels. Bucky could find some hope in Harry's magic, seeing it as a new way to fight for what's right. And as they fight the Sentinels, they both grow and change, learning from each other's worldviews.
One way to blend these worlds in a fanfiction is to have a time - travel or dimension - hopping plot. Suppose Bucky Barnes, while on a mission in the Marvel universe, gets caught in a strange energy wave that transports him to the Harry Potter world. There, he meets Harry Potter. Meanwhile, Steve Rogers follows to find Bucky. They find out that there are similarities between the two worlds in terms of good vs. evil battles. They then work together with Harry and his friends to fight against the dark forces in the Harry Potter world, and in the process, they bring some of their own ideas and values from the Marvel universe, like the importance of freedom and justice.
Well, it could start with a magical portal opening up between the Overwatch world and the wizarding world. Lena might be on a mission when she accidentally stumbles through it and finds herself in Hogwarts. The students and teachers are both intrigued and cautious about this strange new arrival who has such different powers.
A powerful dark magic could be spreading across both worlds. This forces the heroes of both the Harry Potter universe and Queen Tyr'ahnee's kingdom to come together. They would need to combine their magical powers and knowledge to fight this common enemy. In the process, they would learn about each other's worlds and find ways to work together despite their differences.
Well, one way their worlds could collide is through a magical accident. Maybe a spell gone wrong in the wizarding world transports Harry Potter to the world where Pepper Potts exists. Harry, being used to magic, would initially be confused by the high - tech world Pepper is in. And Pepper, being a smart and capable person, would be both intrigued and cautious about this strange boy with magical powers.
A possible storyline could be that the wizarding world is in danger not just from Voldemort but from some sort of threat from the Marvel universe as well. As the son of Bucky Barnes, Harry is seen as a link between the two worlds. He has to bring together the magic of Hogwarts and the skills he has from his father to save both worlds. He might form an alliance with some Marvel characters who find their way into the wizarding world. This would create a really unique and exciting adventure, full of magic, action, and unexpected twists.
One way their worlds could collide is through a magical portal. Maybe in a fanfiction, a powerful wizard in the Harry Potter universe accidentally creates a portal that leads to Middle - earth where Aragorn is. And Aragorn, being a brave and curious leader, steps through the portal to explore the strange new world of magic and wizards.
If Harry was raised by Bucky Barnes, his approach to magic could change. Bucky doesn't have any magical abilities, but his practical thinking could make Harry approach magic more as a tool for survival and protection rather than just for academic or entertainment purposes. Harry's relationships with his friends would also be different. He might be more guarded and less likely to open up quickly, as he's been raised by someone who has seen the worst of humanity. This could lead to a more complex and nuanced dynamic within the group.
In fanfiction, Bucky Barnes might be a transfer student from a different magical school. His past experiences with mind control in the Marvel universe could be paralleled in the Harry Potter world. For example, he could be a target of the Imperius Curse, and his fight against it could be a central plot point. His relationship with other characters like Harry, Hermione, and Ron could also be explored. He might initially be distrusted because of his mysterious background, but over time, he could prove himself a valuable ally.
In a fanfiction scenario, perhaps Nick Fury is on a mission to recruit magical beings for S.H.I.E.L.D. He discovers the existence of the Harry Potter world and tries to make contact. Harry and his friends could be initially suspicious but then see the potential in working with Fury. They could exchange knowledge, with the wizards learning about Muggle technology and Fury learning about magic. This could lead to some really interesting team - ups and adventures against common enemies.