In this fanfiction, Snape might raise Harry in a more secluded environment. He would try to protect Harry from the wizarding world's prying eyes as much as possible. Harry would learn about his parents from Snape's perspective, which could be a very different view compared to what he would have heard otherwise. Snape would also train Harry to be more self - reliant and less impulsive, as he knows the danger that Harry's fame and the prophecy bring.
In some fanfictions, the plot could revolve around Snape teaching Harry about the Dark Arts in a way that Dumbledore never would. Harry might become more proficient in defensive spells against the Dark Arts but also be more exposed to the darker side of magic. This could create a moral dilemma for Harry as he grows up. Additionally, the relationship between Harry and Draco Malfoy could be completely different, as Snape's influence on Harry might make him less likely to be enemies with Draco from the start.
One possible plot could be that with his mother alive, Harry grows up in a loving and magical home environment. He might have a normal childhood in the wizarding world, without the abuse from the Dursleys. His mother could teach him magic from an early age, and he would be more confident and less scarred. He might also form different friendships as he doesn't have the 'outsider' experience at Hogwarts that he had in the original story.
In such a fanfiction, perhaps Wolverine's rough and protective nature would greatly influence Harry. Harry might grow up with a fierce sense of self - defense and loyalty. He could be trained in combat skills from a young age, making him a very different kind of wizard. Maybe he'd use his magic in more physical and aggressive ways compared to the traditional Hogwarts students.
In a 'Harry Potter raised in Ireland' fanfic, perhaps he'd grow up with a strong connection to Irish magic. He might learn unique spells only known in Ireland. Maybe he'd attend a local Irish wizarding school first before Hogwarts, and make friends with Irish magical creatures.
In a 'Harry Potter raised as a Warrior' fanfiction, the story could start with Harry being found by a group of Warriors. They teach him their code of honor and how to fight. As he grows up, he becomes an expert in their ways. When he enters Hogwarts, he stands out because of his unique combat - like approach to things. He might even form his own group of friends who are interested in his Warrior - style, and together they could face the challenges of the wizarding world in a different way compared to the original story. For example, instead of relying solely on spells, he might use his physical combat skills during duels.
In this fanfiction, the ghosts might protect Harry in a way that living people can't. They could give him advice based on their long years of observing Hogwarts. For example, they might tell him secrets about the founders of Hogwarts that help him in his adventures. Also, Harry's personality could be influenced by the ghosts' ethereal and somewhat detached nature, making him more introspective.
The plot could involve Harry growing up in a world where the boundaries between Greek and wizarding magic are blurred. Hecate could introduce him to magical creatures from Greek mythology. He might also have to face different kinds of dark forces that are more related to the ancient evils that Hecate has been fighting for centuries. This would make Harry a very different kind of wizard, one with a more diverse magical knowledge and power base.
One possible plot could be that Harry Potter grows up in Mordor. Sauron might train Harry in dark magic, but Harry could have an internal struggle as he has an inherent sense of good from his parents. He might try to find a way to use the power he's learning for good, against Sauron's wishes.
Well, it could be really interesting. Maybe Sasuke would teach Harry some ninja skills. Harry might grow up with a different kind of magic, a blend of wizardry and ninjutsu. He could use his wand in a more combat - like way inspired by Sasuke's fighting style.
Well, perhaps Harry would grow up with a very different kind of magic. Circe was known for her potions and transformation magic. So Harry might be an expert in those areas from a young age. He could have a more wild and unorthodox upbringing compared to his life with the Dursleys. Maybe he'd be more in tune with nature and magical creatures that Circe might have around her lair.