He would become more of a space - faring leader. His focus would shift from the wizarding world on Earth to the cosmos. He'd probably be more open - minded about different cultures and species, just as he was about different wizarding houses at Hogwarts.
If Harry Potter were the captain of a starship in fanfiction, he'd have to be more adaptable. On a starship, he can't rely on the same rules as in the wizarding world. He'd likely become more tech - savvy, learning how to operate starship controls in addition to using his magic. His leadership style might also change. Instead of leading a group of mostly young wizards, he'd be in charge of a diverse crew of different species and backgrounds. His sense of justice would still be there, but it would be applied in a much broader context, dealing with interstellar laws and ethics.
He would probably be more otherworldly. Harry might have an air of mystery around him that the original Harry didn't have. His actions could be more guided by a sense of divine purpose.
He would likely become more conflicted. Harry, who was always on the side of good, would now have to deal with this dark lineage. He might be more withdrawn as he tries to come to terms with it.
He would probably be more in tune with nature. Instead of just having a connection to Hedwig, he might be able to communicate with all kinds of animals. So he could be more of a naturalist wizard.
If Harry became a succubus, his magical abilities would transform. He could gain the ability to influence others' emotions on a deeper level. His personality might become more complex as he tries to balance his old self with the new instincts of a succubus. He may also become more isolated as some in the wizarding world might fear or misunderstand his new form. But at the same time, he could also find new friends who are more accepting of his unique situation.
If Harry grew a beard in a fanfiction, his personality could also shift a bit. He might become more introspective. The beard could be a physical manifestation of his inner growth. He could be less impulsive, taking more time to think things through, like an old wizard who has seen it all. Also, he might be more reclusive, using the beard as a sort of barrier between himself and the outside world that has always had such high expectations of him.
He would likely be more conflicted. Harry was always a morally upright character, but with Thanos as his father, he'd have to battle inner demons. He might be more powerful physically and have a darker side to his personality that he constantly has to keep in check.
He would be much more physically powerful. Instead of relying just on magic, he could use his Saiyan strength to solve problems. For instance, he might be able to break through magically locked doors with his bare hands.
The story would be completely different. Harry would probably have a very different personality. Instead of the somewhat shy and uncertain Harry we know, he could be more confident and assertive like Captain America. His magical abilities might be used in a more strategic way, similar to how Steve uses his combat skills. And the wizarding world would have to deal with a Harry who has a very different upbringing and set of beliefs.
Naruto's character would likely become more self - reliant. As a pirate captain, he can't always rely on a village or a team for support. He would also become more worldly, exposed to different cultures and ways of life on his sea travels. His sense of justice might expand beyond the boundaries of his ninja village, and he could be more of a free spirit, making decisions based on his own moral compass rather than the established ninja hierarchy.
The concept of Harry Potter as captain of a starship in fanfiction is really interesting. Imagine he has a wand - powered engine or something. His knowledge of magic could be used to create new technologies on the starship. He might also encounter different species of magical beings from other planets. His ability to think on his feet, which he developed during his years at Hogwarts fighting Voldemort, would serve him well when making quick decisions during starship crises, like when they're caught in a black hole's gravitational pull or facing a surprise attack from a space pirate fleet.