When crossed over with 'Lord of the Rings', as a teacher Harry might have to deal with Hobbits or Elves at Hogwarts. His teaching methods would have to adapt to these new students. He could also teach them magic, which might change the power dynamics in Middle - earth when these characters return, greatly altering the original plot.
In a crossover with 'Alice in Wonderland', Harry as a teacher could bring Wonderland characters into the world of Hogwarts. This would completely disrupt the normal order of Hogwarts. For example, the Cheshire Cat's ability to disappear and reappear could inspire new spells or ways of teaching at Hogwarts, thus changing the plot significantly.
If Harry is a teacher in a crossover with 'Percy Jackson', he might introduce different ways of using magic that could influence the demigods. This would change the way they approach their quests and battles, as they now have new magical knowledge from Harry.
The fanfiction might change the plot in terms of Harry's relationships. Maybe his new ability with the Nuibari makes some of his friends jealous or in awe of him. Also, it could attract the attention of new characters or factions who are interested in the Nuibari. This could create new alliances or rivalries for Harry. For example, some dark wizards might want to steal the Nuibari from him, leading to new conflicts. And in his journey to master the Nuibari, he might have to visit new places or seek help from unexpected sources, thus diverging from the original plot.
It adds a new type of creature. The werepire concept changes the magical world by introducing a different kind of threat or ally. Harry might have to face different challenges related to this new entity.
His relationships with the other characters are also altered. Dumbledore, for example, had a big role in Harry's life in the original story. But if Harry is Grindelwald's son, Dumbledore's attitude towards him might be more complex. Dumbledore had a history with Grindelwald, and this new connection could make Dumbledore both more protective and more wary of Harry. The same goes for other characters like Snape. Their interactions with Harry would be colored by this new family connection.
It can change the story by adding new plot elements. For instance, her love for superheroes could lead her to search for magical items that can give her superhero - like powers within the wizarding world.
It changes the original story a great deal. Firstly, Harry's identity is completely different. Instead of being just a wizard, he's now a draconic being. This would change how he approaches challenges. For example, he might use his draconic powers to fight Voldemort instead of just magic spells.
It would change the focus. Instead of just following the main plot of fighting Voldemort, there would be more emphasis on preparation. For example, Harry might spend more time learning about how to protect Hogwarts from all - out destruction rather than just facing Voldemort directly.
It changes it a great deal. For one, Harry's identity is no longer just a wizard. His alien side might make him an outcast in both the wizarding and the Muggle world in different ways. His powers may not be just magic - based but could involve some alien technology or abilities.
Well, it changes a lot. Firstly, Harry's identity would make him stand out even more. Instead of just being the boy who lived, he's now the son of a major Hindu deity. This could mean that he has different kinds of magic at his disposal. For example, he might be able to use some form of divine protection magic that is unique to Shiva's lineage.
Well, it would completely disrupt the original dynamic. Harry's relationship with his friends and the wizarding world was centered around his own journey. If he was abandoned for his brother, his brother might become the 'chosen one' figure in this new scenario. This would mean that Harry might grow up feeling resentful or neglected, and his magical abilities could develop in a very different way, perhaps in secret. It could also lead to a different set of alliances and enmities within the wizarding world.
Harry having ice powers would make the story quite different. In the wizarding world, most magic is more general in nature. Having ice powers would be a very unique and specialized form of magic. He could potentially use his ice powers to explore areas that are normally too dangerous due to extreme heat or fire - based magic. For instance, he could freeze the dragon in the Triwizard Tournament long enough to get the golden egg. His ice powers could also be a key factor in his relationship with Hermione and Ron. Hermione would be eager to research about this new type of magic, while Ron might be both amazed and a little jealous at first. This would add a new layer of complexity to their friendship.