As the son of Sauron, Harry would be a completely different character in many ways. He would no longer be the pure - hearted hero we know. His relationships would be in chaos. His friends might be afraid of him or turn against him. He would have to fight not only external enemies but also his own inner demons. He would be constantly tempted by the dark powers that come with his heritage. And he might start to view the wizarding world in a different light, seeing the flaws in the so - called good side and being more sympathetic to the dark side's motives, at least initially.
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 He might be more withdrawn as he tries to come to terms with it.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 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 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.
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.
Harry would likely have a different sense of self - worth. Knowing he is the son of a powerful underwater hero like Aquaman, he would carry himself with more pride. He might also be more in tune with his emotions, as the ocean is often associated with depth of feeling. And his magical abilities could be enhanced in ways related to water, like creating more powerful water - based spells. He could also be more of a loner, as his unique heritage might make it hard for others to fully understand him.
He would be more aggressive. As a Baratheon, he'd inherit that family's bold and sometimes brash nature. Instead of the somewhat reserved Harry we know, he'd be more likely to take immediate action, whether in a duel or in dealing with a problem at Hogwarts.
He might be more confident in dealing with non - magical people. Since Pepper is used to operating in a world full of normal humans, Harry could have a better understanding of how muggles think. Also, he might be more tech - savvy, using modern devices to aid his magic or to keep in touch with his wizarding friends in a different way.
He would be more powerful. Harry would likely have a sense of grandeur and a different view of his place in the world. His confidence might soar as he realizes he has such a powerful lineage.
He might be more self - reflective. Since Edmund had his own character arc of learning from his mistakes, Harry could inherit that trait. He would be quicker to admit when he's wrong and more likely to learn from his experiences.
He would probably be more confident. Since the Mikaelsons are known for their assertiveness, Harry might inherit some of that trait. He could be more bold in standing up to his enemies, not just Voldemort but also bullies at Hogwarts.