It could be another character who has a deep understanding of magical creatures, like Hagrid. Since the character with wings is related to Charlie in some way, and Charlie is into dragons, Hagrid's knowledge of all kinds of magical creatures might make him a suitable mate. He could help take care of the winged character and understand their unique needs.
Well, in many fanfictions, characters with wings might have the ability to fly at high speeds, which could be useful for escaping danger or getting to places quickly in the wizarding world. They could also use their wings for enhanced maneuverability during magical battles, perhaps dodging spells more easily.
There could be a magical creature that takes on a human - like form and has black angel wings. This creature could be a guardian of some sort, maybe of an important magical artifact. It might initially be seen as a threat but is actually there to protect the wizarding world. When Harry discovers this creature, they form an unlikely bond, and the black angel wings become a symbol of their unique relationship.
Hermione could be a great main character. She's smart and curious, so if she ended up in the Wings of Fire world, she would be eager to learn about the dragons and their society. She could use her knowledge of magic from Harry Potter to interact with the new world and might even try to find a way to combine the two magics.
There could be many amateur authors out there who might write such a fanfiction. It could be a young, creative Harry Potter fan who loves to imagine new and exciting adventures for the characters. They might be inspired by their love for the series and the idea of giving Harry a new and unique ability like growing wings.
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.
Hinata could be a likely member. She has always had feelings for Naruto. Sakura might also be part of it, as she is an important female character in the Naruto series. And perhaps Tenten, who is strong and independent and could be attracted to Naruto's new winged form.
Well, it would likely make him a target as well. In the wizarding world, having such a unique and powerful feature like dragon wings would attract unwanted attention. Voldemort or his followers might see Harry as an even greater threat and hunt him more aggressively. Also, it could have implications for his magic. Maybe he would have to learn to control his flight in combination with his spells, which could be a whole new area of study for him.
Hermione could also be a main character in this fanfiction. Her intelligence combined with the new element of wings could lead to some really interesting plot developments. She might study the magic behind the wings and find ways to use it to help her friends.
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.
One possibility could be a magical encounter. Maybe he stumbles upon a rare and powerful Pokemon or a mystical artifact that bestows him with wings. It could also be a result of some genetic experimentation by a mad scientist in the Pokemon world who targets Ash for an experiment gone wrong (or right, in this case of getting wings).