If Harry Potter becomes immortal in fanfiction, it would be a complete game - changer. He would no longer be bound by the normal lifespan limitations. He could see the evolution of magic over time. He might witness new forms of magic being created or old, forgotten spells being rediscovered. His relationships would also be very different. He'd have to watch his friends age and die while he remained unchanged. This could lead to a great sense of loneliness, but also a new kind of purpose as he tries to leave a lasting positive impact on the wizarding world for all eternity.
His character would likely become more patient. Since he has all the time in the world, he won't be in a rush to make decisions. He could become a great philosopher of magic, spending years thinking about the deeper meaning of spells and magical abilities.
One idea could be that Harry discovers a hidden centaur community in the Forbidden Forest. He's initially scared but soon realizes they have a deep connection to magic that Hogwarts has not taught. He starts learning from them, about their archery skills and how they communicate with nature.
If Harry Potter becomes a Sith in fanfiction, it would be a wild departure from his original character. He'd likely trade his Gryffindor values for the dark and power - hungry ways of the Sith. His magic could take on a more menacing form, and his relationships would be severely strained. For example, his friendship with Ron and Hermione might turn into enmity as he delved deeper into the dark side.
Well, if Harry Potter becomes a genie in fanfiction, he could use his magic in very different ways. He might be able to grant wishes, which would be a huge change from his usual spell - casting. For example, he could grant the wishes of his friends like Hermione and Ron. Maybe Hermione would wish for all the knowledge in the world to be easily accessible, and Harry as a genie could make it so.
Sure. In the world of 'Harry Potter' fanfiction, the concept of Dudley as a wizard isn't unheard of. Some fanfictions might use this idea to show Dudley's redemption arc. He could start as the bully we know from the original books but then transform into a wizard and learn about the values of the wizarding community. It can also be a way to explore the Dursley family's relationship with magic in a different light, rather than just being Muggles who shun it.
Some of the more progressive magical families like the Weasleys might side with Harry. They've always been on the side of good and if Harry shows that his rule would bring positive changes to the wizarding world, they'd be his allies.
The perception of Harry would be turned upside down. In the original series, he is the symbol of good and the one who defeats Voldemort. But in this fanfiction, he is the one causing harm, which makes readers question everything they thought they knew about his character. His motives, actions, and relationships would all be seen in a new and disturbing light.
It could be a mix of students from different houses. In Hogwarts, students from all four houses come together for classes. Harry, having experienced the unity and rivalry among the houses, would be able to handle the diverse group of students well. He might encourage more inter - house cooperation in his classes, breaking down some of the traditional house rivalries.
It's hard to say. Some fanfictions gain a lot of popularity within the fan community, while others remain relatively unknown. If it has a really engaging plot, unique characters, or great writing, it could be popular.