His life would be full of magic in a very different sense. Alduin, being a powerful dragon from the Elder Scrolls universe, would teach Harry about a different kind of power. Harry might grow up learning to control dragon - like abilities. He could be more in tune with nature and primal forces rather than the traditional magic he learned at Hogwarts.
If Harry Potter was raised by Alduin, he would likely have a much more solitary upbringing. Alduin isn't exactly a social creature like humans. Harry might develop a more fierce and independent personality. His magic could be more raw and less refined as he wouldn't have the structured learning of Hogwarts. He would probably have to fend for himself more often and rely on his instincts.
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.
Well, if Harry Potter was raised by the Joker, he would probably be trained in a very different set of skills. Instead of learning magic in a traditional Hogwarts way, he could be taught how to be a master of chaos and trickery. His values would be completely different too. He might not have the same sense of justice and good that he has in the original story. The Joker's influence could lead Harry to question the very concept of right and wrong. And his relationships would be strange. He may not form the same kind of friendships as he did in the wizarding world. He might be more isolated or form alliances with those on the darker side of the magical or Muggle world.
His life would be a blend of the magical world of Harry Potter and the ninja world elements from Kushina. He might grow up with a strong sense of family, as Kushina was very family - oriented. He could also inherit some of her ninja skills, making him a unique wizard with both magic and physical combat abilities.
His life would likely be very different. Madam Pomfrey is strict about health and well - being. Harry might grow up with a greater understanding of potions and healing magic. He could be more reserved and less likely to get into dangerous situations as Pomfrey would instill a sense of caution in him.
His life would be quite different. Walburga was a strict and proud pure - blood. Harry might grow up with a stronger sense of pure - blood superiority drilled into him. He could be more proficient in dark arts - adjacent magic earlier as Walburga was from the Black family which had some connections to such magic. However, he would also likely face more internal conflict as the values of Hogwarts and his friends would clash with what Walburga taught him.
Well, if Harry Potter was raised by Poison Ivy, he'd likely have a very different upbringing. For one, he might not be as used to the traditional wizarding ways. Poison Ivy would probably teach him self - reliance in a more primal, nature - based way. His moral compass could also be influenced by her more radical views on protecting nature. He might see the wizarding world's use of magic on nature in a different light and strive to change it.
In this kind of fanfiction, perhaps Harry would grow up with a different kind of family warmth. His grandparents might be more traditional and instill in him values that are different from what he would have learned at the Dursleys. He could be more connected to the wizarding world's history as his grandparents might have more stories to tell from the older days. Maybe he would be less bullied and more confident, and his magical abilities could develop in a more natural and unrestrained way.
His personality would be a mix of his original self and Orochimaru's influence. Harry is inherently brave, but Orochimaru's devious nature might make him more cautious and calculating. He might be less trusting of others, always suspecting ulterior motives. And he could also be more ruthless when it comes to achieving his goals, having learned from Orochimaru that sometimes you have to be cruel to get what you want.
Well, if Harry Potter was raised by the God of Life, he would probably be a very different person. For one thing, his upbringing would likely be filled with teachings about the cycle of life and death. This could make him more empathetic towards those who have suffered losses. Also, his magic might be more attuned to life - giving spells and he could potentially bring new life to areas that have been damaged. Maybe he would be less vengeful towards Voldemort and more focused on redeeming him through the power of life.
It could be amazing. Maybe Harry would grow up with a stronger sense of family heritage. He might have access to more hidden magic within the castle walls from an early age. And he could form different relationships with the portraits and ghosts in the castle compared to his original upbringing.