The story could start with Diggory finding out about Harry's situation. Since Diggory is a good - hearted person, he decides to take Harry in. Harry would then grow up in a wizarding family environment. He would probably be trained in dueling and magic from a young age. His personality could be more outgoing as he is not constantly bullied. And his relationship with Cedric Diggory would be more like a brotherly bond, which would also have an impact on his relationships with other Hogwarts students.
Well, it could be really interesting. Maybe Harry would grow up with different values and skills. Diggory seems like a kind and brave character, so Harry might be more confident and less alone compared to his original upbringing.
His character would be more stable. Without the Dursleys' abuse, he would be less angry and more trusting.
If Harry was raised at Potter Manor in fanfiction, it would change a great deal. He could have a more stable support system. Instead of being bullied and neglected, he'd be surrounded by the remnants of his family's magic. The manor itself might have a library filled with rare magical tomes that he could study, and perhaps there would be a family - appointed tutor for him. This would make him more confident and knowledgeable when he enters Hogwarts, and his relationships with his classmates might be different as he wouldn't have the same insecurities.
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.
Well, in a 'Harry Potter raised in Potter Manor' fanfiction, we might see Harry having a different kind of upbringing. He could be surrounded by portraits of his ancestors who could offer him advice and wisdom. The manor itself might hold hidden chambers or libraries filled with rare magical knowledge. This could lead to Harry being more confident and self - assured when he finally goes to Hogwarts.
In this kind of fanfiction, it could be really dark. Harry might grow up with a very different set of skills. Since Nundus are extremely dangerous creatures, he could be more in tune with the wild and dangerous side of magic. Maybe he'd be more solitary and less trusting of others, having been raised by such a fearsome beast.
Well, it could be a really interesting story. Xander from Buffy the Vampire Slayer has his own set of skills and a unique personality. He might teach Harry some street - smart ways of dealing with things. Harry could grow up with a different kind of courage, one that's more about facing the everyday oddities. Maybe Xander would introduce Harry to a world that's a mix of the magical and the 'normal' strange, like the demons he faced in Sunnydale.
Well, if Harry Potter was raised by the founders in fanfiction, he'd likely have a very different personality. For example, Godric Gryffindor might instill in him even more courage and a sense of adventure right from his childhood. And Salazar Slytherin could teach him some of the more complex and perhaps a bit darker aspects of magic in a more positive light, as long as they are used for good. He'd also have a unique connection to Hogwarts, almost like he's part of the very essence of the school.
If Harry Potter were raised by Narcissa in fanfiction, it would change his entire world view. Narcissa is a complex character. She's loyal to her family and the Dark Lord to an extent. Harry would likely be taught magic in a more traditional pure - blood way. His appearance might be different too, as Narcissa would probably ensure he was dressed and groomed in a more sophisticated manner. Also, his understanding of the wizarding world's social hierarchy would be shaped by Narcissa's beliefs.
Well, it could be really interesting. Harry might grow up with a different set of values. Shinigami are often associated with death in some cultures. So Harry could have a more solemn and perhaps darker view of life. He might be trained in some unique skills related to the Shinigami's nature, like being able to sense death or having some special powers to deal with the afterlife.
In such a fanfiction, Harry would likely grow up with a deep understanding of Hogwarts' original values. He might be trained in magic in ways that are more in line with the founders' intentions. For example, he could be taught advanced magic from a very young age, as the founders were extremely powerful wizards.