If Harry never went to Hogwarts, his relationship with Dumbledore would be completely altered. Dumbledore might not take as much interest in Harry without him being at Hogwarts. Harry wouldn't be influenced by Dumbledore's wisdom and guidance in the same way. And the other characters who were connected to Harry through Hogwarts, like the Weasley family, might not have the same close bond with him. The whole social fabric of the wizarding world would be rewoven as relationships that were centered around Hogwarts and Harry's presence there would change.
The relationship between Harry and Voldemort would be very different. Without the protection and training at Hogwarts, Harry could be more vulnerable to Voldemort's attacks earlier. Also, the prophecy might not be as significant without Harry being in the Hogwarts environment. And the Order of the Phoenix might not form in the same way without Harry as a central figure trained at Hogwarts.
Hermione and Ron might not become friends in the same way. Since Harry was the catalyst for their friendship at Hogwarts, without him there, they might not cross paths as easily. Hermione could be more focused on her studies alone in a different school, and Ron might be stuck in his family's shadow without Harry to bring out his better qualities.
His relationships would likely be very different. For one, he might be more of an outsider. The other students grew up in the wizarding world in a more common way, while Harry was raised by the Flamels. He could be seen as having an unfair advantage in terms of magic knowledge. But on the other hand, he might also be respected more for his unique upbringing.
One possible plot could be that Harry Potter discovers a different magical school. Maybe he stumbles upon a hidden school in the Muggle world that has been secretly teaching magic. He could form new friendships and face different types of magical challenges there. It would be a completely new magical experience for him, away from the familiar Hogwarts environment.
Harry would likely enter Hogwarts with a more confident and carefree attitude. His parents could have given him valuable advice about the school, like which professors to befriend and which ones to be cautious of. He might also have some family - related advantages, such as access to special magical items passed down from the Potter family. And without the shadow of his parents' death, he could fully enjoy his time at Hogwarts, participate in more school activities, and not be as isolated as he was in the original story.
The Dumbledore character could still be important. He might be secretly watching over Harry, guiding him from a distance. Another character could be a new wizard or witch that Harry meets in the Muggle world who has a special mission related to Harry. For example, a young witch who has been exiled from the wizarding world but has the knowledge to help Harry understand his powers. And of course, Voldemort would still be a main antagonist as his threat looms over the entire wizarding world whether Harry is at Hogwarts or not.
He'd likely be less jaded. At Hogwarts, he faced a lot of hardships like being bullied by the Marauders. Without that, he might be more open and less defensive. His social skills could be better as he wouldn't have developed the same level of distrust towards others.
One possibility is that Harry grows up in the Muggle world completely unaware of his wizarding heritage. He might lead a normal life, going to a regular school, making Muggle friends, and having no idea about the magical world that could have been his. Maybe he has a natural aptitude for something like martial arts or a particular academic subject that in the wizarding world would be replaced by magic.
Harry's relationship with his family would be completely reimagined. Instead of having memories of his parents from the wizarding world, his sense of family would be centered around Gaara. He would have loyalty to Gaara in a way that is different from the traditional family bonds in the Harry Potter series. When he discovers his true heritage in the wizarding world, he might struggle to reconcile his newfound family connections with his loyalty to Gaara. This could lead to a complex and interesting exploration of family, loyalty, and identity in the fanfiction.
Well, he'd probably be more of a legacy student. He might be treated with even more respect or envy from the start. And he could have a different group of friends. Instead of Ron and Hermione, he might be closer to his brother's old gang, like Sirius and Remus, from the very beginning at Hogwarts.
Harry's relationship with Dumbledore could be one of the most interesting changes. Dumbledore would likely see Harry as a very different kind of wizard. He might be more cautious in guiding Harry, as he tries to understand the influence of Poison Ivy. Harry, on the other hand, might not be as quick to trust Dumbledore as he was in the original story. He could be more independent and question Dumbledore's motives more often, especially if he felt that Dumbledore's actions were not in line with the values he learned from Poison Ivy, which are more centered around nature and its protection.
His relationships would be very different. With Hermione and Ron, he might seem like an enigma at first. His wolf - raised nature could make him more aloof or independent. He might not understand some of their social norms right away. But they could also be drawn to his unique qualities. His relationship with teachers would also be strange. They might not know how to handle a student with such an unorthodox upbringing.