In a fanfiction where Harry Potter turns into a heartless character, his actions would be very different from what we expect. He might turn against Hogwarts and try to take it over by force. His Gryffindor courage could be twisted into a reckless and cruel bravado. Instead of protecting the wizarding world, he could start to cause chaos. His Patronus, which was originally a symbol of his hope and love, might change or disappear altogether, reflecting his inner transformation into a heartless being. He could also start to bully those who were once his friends or weaker than him.
If Harry Potter turns into a heartless in fanfiction, it would be a huge change from his usual self. His relationships would be in shambles. Hermione and Ron would be shocked and try to bring him back to his old self. He could ally with the Dark forces not because he believes in their cause but just for power. He'd disregard the feelings of others, like the way he cared about the younger students in Hogwarts before. This would create a very dark and different version of the Harry Potter world we know.
In some fanfiction, it might be related to a hidden magic within Hogwarts itself. There could be a mysterious force in the school that reacts to Harry's unique connection to the place. For example, if he uncovers a long - forgotten chamber or artifact that has some sort of transformative power. Since basilisks are associated with the Chamber of Secrets, it's possible that something in that area could be the cause.
He might start spending all his free time watching animations and collecting related merchandise. He could even try to use magic to create his own animated world.
Well, it could be really interesting. Maybe Harry would start to see the magical world through the lens of cartoon logic. He might use cartoon - like spells that have over - the - top effects. For example, instead of a normal Patronus charm, his Patronus could turn into a huge, colorful, and goofy - looking animal that acts like a cartoon character, bouncing around and making silly noises.
Well, if Harry Potter turns into a gorgon in fanfiction, he would probably have some really cool and terrifying powers. He could turn people to stone just by looking at them. Maybe he'd struggle to control this new ability at first and accidentally petrify some of his friends. But then he'd learn to use it for good, like scaring off Death Eaters or protecting Hogwarts in a very unique way.
Well, it could be due to a misfired spell. Maybe some experimental magic gone wrong in Hogwarts. A spell that was supposed to do something else, like transform an object, but instead affected Harry and turned him into Luna. It would be a really strange and interesting situation, with Harry having to deal with Luna's unique perspective while stuck in her form.
Next, her friends could try to find a way to reverse the transformation. They might search for ancient books or consult with wise wizards from other lands. Meanwhile, Fem Harry could be struggling with her new form's physical and mental changes. She might be stronger but also more aggressive. If she accidentally harms someone she cares about in her new state, it would add a lot of drama to the story.
Another possibility is that it's an accidental result of a powerful magic clash between Voldemort and Harry. When their magic collides in a certain way, it causes an unexpected transformation on Harry, turning him into a girl. This would add a whole new layer of complexity to their relationship and the overall story.
One possibility is that Harry Potter becomes a hybrid of a wizard and a centaur. He would inherit the centaur's knowledge of the stars and nature. His lower body being that of a centaur would make it difficult for him to move around Hogwarts in the normal way. He would have to find new ways to get to his classes. And he might be shunned by some students who are afraid of his new and strange appearance, but he could also form new alliances with those who are more open - minded and interested in his unique situation.
One possible plot could be that Harry is under a powerful dark spell. The transformation into a dragon might be a part of a scheme by Voldemort or his followers to either discredit Harry or use his new form for some evil purpose. Maybe Harry has to learn to control his dragon form in order to fight back and protect Hogwarts and his friends.
If Harry Potter turned into a girl, it would bring a whole new dynamic to the story. For one, the relationships with other characters would change. Hermione might become more of a sister - figure or a rival in a different way. Ron might have a different kind of crush on her. Also, the way she would approach magic and the challenges at Hogwarts could be different. Girls in the wizarding world may face different expectations, and as a girl, Harry might have to fight against different forms of prejudice or be treated differently by teachers like Snape.