His self - confidence could be more stable. In the original, Harry had to figure out a lot on his own. With a grandmother, he'd have someone constantly building him up. So he might be more assertive in a calm way, not as likely to doubt himself as much as he did in the original story.
Harry would probably be more traditional in his views. His grandmother, being from an older generation, would pass on her values. He might be less accepting of some of the more modern or radical ideas at Hogwarts. For example, he could be more hesitant about the idea of house - elf liberation as he's been raised with more traditional wizard - house - elf relationships.
Harry might have a stronger sense of self - worth. In the original story, he grew up with the Dursleys who made him feel unwanted. But if raised by a phoenix, he would be surrounded by unconditional love and protection. This could make him more confident and self - assured, not easily swayed by the opinions of others and more determined to follow his own path in the fight against evil.
His personality would be shaped by the strict religious environment. He'd likely be more respectful of authority figures, having been raised by nuns. In the wizarding world, this could mean he has a different relationship with teachers like Snape. He might also be more empathetic towards those who are ostracized, like the house - elves, because of the values instilled by the nuns about caring for the less fortunate. Moreover, he would be more accustomed to a simple life, so the grandeur of the wizarding world might both amaze and overwhelm him at the same time.
Well, his story would be extremely different. For one, he'd be trained in stealth and combat skills from a young age instead of learning magic at Hogwarts in the traditional way. He might not have the same group of friends as in the original story. Instead of having Ron and Hermione as his closest allies, he could be more solitary or have assassin - type comrades. His view of good and evil would also be more blurred as an assassin, perhaps seeing the world in terms of targets and those who hire him rather than the clear - cut good vs. evil of the wizarding world. And his relationship with Voldemort would be more of a hit - or - miss rather than the epic battle of good against evil.
He'd probably be more sophisticated. The Delacour family is known for their elegance and grace. Harry might have a more refined way of speaking and acting compared to his canon self. For instance, he would be more likely to use formal French wizarding greetings.
His personality would likely be more reserved and calculating. Growing up with the Malfoys, he'd be taught to keep his emotions in check and think before acting. He might be more aloof towards others outside of the pure - blood circle at first.
The magic would be different in that it would have a more ancient and primal feel. Since Alduin is an ancient and powerful entity, Harry's magic would be influenced by that. It wouldn't be limited to the rules and regulations of the wizarding world. He could potentially have the ability to transform into something more dragon - like, or at least gain some of the physical attributes of a dragon. His magic would be a blend of his own wizarding heritage and Alduin's otherworldly power, creating a completely new and unique form of magic that is both terrifying and awe - inspiring.
His magic would likely be more water - based. He might be able to conjure water - made weapons or shields more easily. For example, he could create a spear made of enchanted water that can pierce through dark magic defenses.
In the original Harry Potter story, Harry had to discover his family's history and the wizarding world gradually. However, if he was raised in Potter Castle in a fanfiction, he would be immersed in it from day one. He would likely have a more natural understanding of magic and its workings. His relationships would also be different. Instead of having Ron and Hermione as his first real friends, he might have made friends with other magical beings or have different relationships with the portraits in the castle that could have guided him. His early experiences would shape him into a potentially more self - assured and magically - proficient Harry Potter, leading to a different trajectory for his adventures at Hogwarts and beyond.
In the original Harry Potter story, Harry is a product of the British wizarding world. But if he were raised in Spain in a fanfiction, everything from his accent to his fashion sense could be different. He might wear Spanish - style robes and have a more Mediterranean look. His magical education would start with a different foundation, perhaps more focused on the history of Spanish magic. His adventures at Hogwarts would also be affected, as he'd bring in elements from his Spanish upbringing, like different types of magic items or methods of solving problems that are unique to Spanish magic.
In the original, Hogwarts is in Scotland. But in this fanfiction, the school could be in a Mexican castle or an ancient temple converted into a school. Harry's enemies would also be different. He might face threats that are specific to the Mexican magical community, like dark wizards with a different motivation based on Mexican history or mythology. His relationships with teachers would be different too, as they would have different teaching styles based on Mexican culture.