His physical abilities would be enhanced. He'd be much stronger and faster than normal wizards. So, in Quidditch, he'd be an even more formidable Seeker. Also, his Saiyan anger could be a double - edged sword. It might help him in a fight but could also cause problems if he loses control.
The story would change significantly. Harry's growth would not only be about learning magic but also about mastering his Saiyan powers. His time at Hogwarts would be different as he'd need to find a balance between being a wizard and a Saiyan. For instance, his Saiyan need for combat might lead him to seek out more dangerous magical creatures to test his strength. And when it comes to the final battle with Voldemort, he could use his Saiyan transformation to gain an edge, making the battle more epic and unpredictable.
If Harry were born a Saiyan, his relationships would change. His friends might be both in awe and a bit scared of his new powers. Hermione might try to study his Saiyan abilities while Ron would be more interested in how it makes him better at sports. And his battles with the Death Eaters would be more intense. He could take on multiple opponents at once with his Saiyan strength and energy blasts.
If Harry was born a phoenix in fanfiction, his relationships would be affected. His enemies might be more hesitant to attack him directly, fearing his phoenix - like abilities. His friends, on the other hand, would rely on him even more for protection. Also, his academic journey at Hogwarts would be different. He might have an easier time in some subjects related to magic that phoenixes are associated with, like Transfiguration when it comes to changing forms or Charms that deal with protection. And he could use his phoenix abilities to explore the castle in ways others couldn't, like flying through small spaces or sensing hidden magic.
In terms of his classes, Defense Against the Dark Arts would be a whole new experience. He could use his Saiyan powers to counter dark magic in ways that no one has ever seen before. He might even develop his own unique spells that are a blend of magic and Saiyan energy, making him a truly formidable wizard - Saiyan hybrid at Hogwarts.
He would become more confident. Saiyans are known for their pride and confidence in their power. Harry, with Saiyan blood, would likely carry himself differently. He'd be more willing to take on challenges head - on without as much hesitation.
Well, in Westeros, the magic is often associated with the gods or ancient powers. Harry Potter's abilities would be seen in a different light. His wandless magic, which he sometimes shows in the original series, might be more developed as he'd need to rely on it more often in a world where carrying a wand around might not be as common or acceptable. His ability to resist the Imperius Curse could be seen as a form of mental strength that is highly prized in Westeros' political games. His knowledge of potions could be used in a more alchemical way, perhaps to create powerful elixirs that could give him an edge in the power struggles, rather than just for school assignments.
Well, it could be really interesting. Harry might have Saiyan powers like super strength and the ability to transform into a Super Saiyan. He could use his Saiyan rage in battles against Voldemort. For example, when facing a Dementor, instead of using a Patronus charm, he might power up like a Saiyan and blast it away with his energy.
If Naruto was born a Saiyan, the entire Naruto storyline would be completely different. For starters, he'd likely have a tail and the ability to transform into a Great Ape. His power level at a young age would be much higher than in the original story. Instead of learning ninja techniques like the Rasengan, he might focus on mastering Saiyan ki blasts. His goal might not be to become Hokage but rather to become the strongest Saiyan in the universe, or at least on Earth. Also, his relationships with characters like Sasuke would change. Sasuke might see Naruto as an even greater rival, not just in ninja skills but also in raw power.
If Snape was never born, the whole dynamic at Hogwarts would be drastically different. Snape played a crucial role in the balance of power between the good and the bad. Without him, Voldemort might have had an easier time infiltrating Hogwarts. Also, Harry might not have had someone constantly on his case, which could have led to a different kind of growth for him.
His living conditions would change drastically. Instead of living with the Dursleys, he'd be in a palace. He'd have servants and a much more luxurious life.
His story would be drastically different. He might not have the same fear of Voldemort as he would be in a different environment. Instead, he could be facing threats related to Rias' world like other devil clans or powerful supernatural beings.
His view of family would be different. Vikings had a strong sense of clan. So instead of longing for a family like he did in the original story, he'd be part of a large Viking family unit. His magical abilities might be more of a mystery to the Vikings around him, and they could either fear or revere him for it.