He can turn into a more determined version of himself. Once pissed off, Harry may set his mind on finding the truth or getting revenge. His stubborn streak gets stronger. He won't be easily dissuaded from his goals. This can lead him to take risks that he wouldn't normally take. In some fanfiction, this new - found determination can be both a good and a bad thing. Good in that it helps him solve problems, but bad in that it can put him in more dangerous situations.
His anger might make him more reckless. Usually, Ichigo is a fairly level - headed fighter, but when he's pissed at Rukia, he could start making hasty decisions in battle or in his relationships. For example, he might go after an enemy without a proper plan just to prove a point.
It might become strained. They could start avoiding each other for a while until they resolve the issue. In some cases, Trish might be less likely to help Nero in his quests or battles if she's really pissed off.
He becomes more self - reliant. Harry has to learn to take care of himself without depending on the Dursleys' meager provisions. He'll figure out how to get food, shelter, and clothing on his own, which will make him tougher.
It can make the story more intense. A pissed - off Harry Potter is likely to take more drastic actions. For instance, he might be more aggressive in his fight against the dark forces, which can drive the plot forward quickly.
Draco may become more empathetic. Harry's clothes could serve as a reminder of Harry's experiences and struggles. This could make Draco more understanding towards Harry and others in similar situations. For example, if Harry has faced a lot of prejudice in his life and Draco is now wearing his clothes, Draco might start to think about how he has contributed to that prejudice and want to change.
Physically, of course, there are the obvious changes. But more importantly, her personality might become more nurturing. For example, she could be more empathetic towards others' feelings, which might change how she interacts with Neville or other students who were bullied. Also, she might be more in tune with her emotions and not suppress them as much as male - Harry did.
He becomes more detached from the petty squabbles of the wizarding world. His concerns shift from things like Voldemort and Hogwarts politics to the well - being of the entire universe.
As a girl, Harry's character would likely become more attuned to the subtleties of communication. In the original story, Harry was straightforward and to - the - point. But as a girl, she might use more nuanced language and body language to convey her thoughts and feelings. Her sense of style could also become an important part of her character. Maybe she starts wearing different robes or accessories that reflect her new identity. This could also influence how she is perceived by others and how she perceives herself. She might also be more likely to rely on her female friends for support rather than always trying to handle things on her own as she did before.
He often becomes more self - reflective. When bound, he has to face situations that he can't easily escape from. This makes him look at his own actions and beliefs more closely. For instance, if he's bound to help the Gryffindors in a task, he starts to question his Slytherin - Gryffindor rivalry.
His relationship with magic could also transform. Without the support of the wizarding community, he may start to explore magic in his own way. He could discover new spells or magical abilities that are not taught at Hogwarts. This newfound knowledge might be a double - edged sword. On one hand, it could help him survive as an outcast. On the other hand, it could further isolate him as it makes him even more different from the others.