The plot could involve Harry trying to hide his new wings at first. He might be afraid of how the Avengers would react. But then, as the story progresses, his wings could become an asset in a big battle against a common enemy. Maybe the enemy has some sort of anti - flight technology, and Harry's magically - enhanced wings are the key to victory.
One plot idea could be that Harry is initially confused by his wings. He travels to the Avengers' world through some magical portal and his wings are a side - effect. The Avengers initially see him as a threat because of his strange appearance. But as they get to know him and his abilities, they realize he can be an ally. The story could then revolve around Harry and the Avengers learning to trust each other and using his wings - related abilities to save the day from a powerful new threat that neither could face alone.
A possible plot could be that Harry Potter's wings are the result of a villain's plot. The villain wants to use Harry's connection to both the magical and superhero worlds to create chaos. So, the Avengers and Harry have to work together to find a way to reverse the spell or whatever caused the wings while also stopping the villain's other evil plans.
It could be possible if there is a powerful magic item involved. For example, a magical artifact from the Harry Potter world that, when combined with some high - tech gadget from the Avengers universe, gives Harry Potter wings. Another way could be through a spell cast by a powerful witch or wizard that has unforeseen consequences in the context of the Avengers' world, resulting in the growth of wings.
Maybe Harry Potter gets accidentally teleported to the Avengers' world. His PTSD from the wizarding wars is still haunting him. The Avengers notice his strange behavior and powers. They try to help him while also dealing with threats that come their way. Harry has to learn to trust the Avengers and use his magic in this new world.
In such a fanfiction, the plot might start with Harry being transported to the Avengers' world. They recognize his potential and decide to train him. Harry would be exposed to new ways of thinking. The Avengers' training methods would be different from what he's used to at Hogwarts. He might struggle at first to adapt, but gradually he would learn. For instance, Black Widow could train him in espionage and stealth, which could be useful when dealing with dark wizards in a more covert way.
Perhaps the wings grow as a result of some ancient magic that has been awakened within Harry. He could be exploring an old, forgotten part of Hogwarts and accidentally triggers a spell or a curse that gives him wings. At first, he might be scared and try to hide them, but as he learns to control them, he realizes they can be used for good, like helping him rescue trapped students or animals in the Forbidden Forest.
Well, Tony Stark would probably be quite amused. He might make some sarcastic comments about the magic in the fanfiction compared to his high - tech gadgets. Thor would be a bit confused at first, trying to understand the concept of wizards and Hogwarts. And Steve Rogers would be more open - minded, seeing it as an interesting form of creative writing.
Well, he could bring his magic skills to the team. Maybe he'd use spells like 'Expelliarmus' to disarm villains before the Avengers could even react. His ability to apparate could also be useful for quick getaways or surprise attacks on enemies.
Harry would probably be a bit overwhelmed at first. He's used to the structured life at Hogwarts, but living with the Avengers would be very different. He'd have to get used to the high - tech environment and the non - magical ways of doing things. But he's a quick learner, so he'd start to adapt by learning from the Avengers. For example, he'd learn how to use their communication devices.
Another interesting plot point is when Harry starts to learn to fly with his wings. It's different from using a broomstick. He has to figure out the mechanics of flapping his wings and how to steer in the air. This often leads to some really exciting flying scenes in the fanfiction.
Perhaps in this fanfiction, the Death Eaters team up with some of the Avengers' villains. The Death Eaters could use the Cruciatus Curse on the Avengers, which is a form of torture in the Harry Potter world. This would be a really dark and intense scenario, with the Avengers having to figure out how to fight against this new and very different kind of threat.
His overall posture and movement would change too. With the wings, he would need to be more aware of his surroundings to avoid knocking things over with them. His gait might be different as he adjusts to the new weight and balance on his back. Also, his face might have a more 'otherworldly' look. Maybe his eyes would have a glint like a dragon's, or his skin could take on a slightly scaly texture near the base of the wings.