Well, if Harry is a celestial being in Leo fanfiction, it might introduce new plotlines. Maybe he has to fulfill some celestial mission related to Leo, like saving a constellation or something. His celestial nature could also attract new allies or enemies who are interested in his powers or his role in the celestial world.
It can change the whole dynamic. For example, his celestial powers might make him a more dominant force in the story. He could use his powers to overcome obstacles more easily or to protect others in a more spectacular way.
Well, in some Leo fanfiction, the idea of Harry Potter being a celestial being might be a creative and out - of - the - box concept. It could mean that the author has reimagined Harry in a more god - like or otherworldly form within the context of that fan - created universe. Maybe it gives him special powers or a different kind of status compared to his original portrayal in the official Harry Potter series.
It might make her more mysterious to her friends at first. They could be both intrigued and a little bit wary of her ability to change her appearance. But as they get to know her better, they come to accept and even rely on it in some cases.
When Harry is a dominant magical creature, say a mermaid or merman in some fanfictions, it completely alters his relationship with water elements. In the original story, water was just another part of the environment. But as a dominant mermaid/merman, he could have the power to control water, communicate with water - based magical creatures. This would have a huge impact on events like the Triwizard Tournament's second task. He could have easily aced it with his newfound abilities.
It can distort the theme of good vs. evil. In the original, good triumphs through love and friendship. But when he's experimented on, it might show a darker side where his agency is taken away, which goes against the idea of the hero's journey. It could also make the wizarding world seem more cruel and unethical than it was originally portrayed.
The description of him being tall in fanfiction can enhance his leadership qualities. People often associate height with authority, and Harry, being tall, can be seen as a more natural leader among his friends and peers. He might be more likely to be the one others look up to, both literally and figuratively. This can influence how he is portrayed in group situations, like during battles or when making important decisions.
His refusal to talk can also lead to misinterpretations in the fanfiction. Other characters might misjudge his motives or feelings because he's not communicating verbally. This can then cause conflicts or plot twists. For example, Ron might think Harry is angry with him when in fact Harry is just dealing with his own issues privately.
Let's say his pet is a dementor. It would change the whole atmosphere of the story. The characters would constantly be in fear of having their souls sucked out. It could also be used to guard important places. For instance, Voldemort might place it near the entrance of his lair. This would make it extremely difficult for the heroes to approach as they have to deal with this terrifying creature first. Also, it could spread a sense of despair among the wizarding community, making people more vulnerable to Voldemort's control.
His anger could drive him to take risks he wouldn't normally take. Maybe he decides to go after a powerful enemy on his own without proper backup because he's so angry that he doesn't think clearly. This could put him in great danger and also change the course of the story as the other characters then have to scramble to save him.
It could change the power dynamics. If Harry finds a loophole in a powerful spell or a rule, he might become more of a threat to the Dark forces. For example, if he can use a spell in a new way due to the loophole, he can better defend against Voldemort's attacks.
It can completely change the direction of the story. Instead of the usual fight against Voldemort as the main good guy, he might be seen as a potential threat by some. This creates new conflicts.