Harry would probably be more reserved. Rosalie has a certain elegance and poise, and Harry might pick up on that. He may not be as quick to trust others as he was in the original story. Also, his view on magic could be different. Instead of seeing it just as a tool for good or for fun, he might see it as a way to protect himself and those he loves, similar to how Rosalie views her own vampiric abilities.
If raised by Rosalie, Harry's character would change significantly. Rosalie's protective nature would make Harry more cautious and aware of his surroundings. He would grow up with a different set of values, perhaps more focused on self - reliance and the importance of family. His social skills might be different too. He may not be as eager to make friends as he was in the original story because Rosalie's influence might make him more self - sufficient. And his relationship with magic would be transformed. He might not be as curious about the new and strange aspects of magic, but rather more concerned with how it can be used to safeguard himself and his loved ones.
Well, perhaps Harry would grow up with a different kind of magic. Rosalie, if we're thinking of a vampire Rosalie from Twilight in this crossover, might teach Harry some skills related to self - defense in a very physical way. He could be more in touch with his instincts and have a different view on magic compared to how he was raised in the original Potter story.
He becomes more humble. Elves are used to serving and being in a subservient position. Growing up with them, Harry would learn the value of every being, no matter their status. He'd be less likely to show off his magical abilities like he might have in the original story.
He'd be more adaptable. Quarians live in a different way than wizards, so Harry would learn to be flexible in new situations.
His character becomes more confident. Since he was raised by a god, he has a certain level of self - assurance that normal Harry might not have. He may not be as easily intimidated by Voldemort or other threats.
He would likely be more confident in his physical abilities. Yoruichi is a very capable fighter, and if she raised Harry, he would be trained in combat. So he might not be as hesitant in dangerous situations as the original Harry. He could be more likely to take risks and trust in his own strength.
Harry would probably be more attuned to dark magic. His upbringing by Satan would expose him to different forms of magic and he would have a different understanding of power. He might be more ruthless in achieving his goals and less concerned about the consequences for others. For example, in the original series, Harry was always worried about the safety of his friends, but in this fanfiction, he might use his friends as pawns if it served his purpose.
Harry in this fanfiction is likely to be more ruthless. Voldemort's upbringing would make him less empathetic. He may value power above all else and be more willing to use dark magic to achieve his goals. His relationships would also be different. He wouldn't have the same close - knit group of friends as in the original story. Instead, he might be surrounded by Death Eaters or those who follow Voldemort's ideology.
He would be more cunning. Maleficent is a master of manipulation, and Harry would likely pick up on those skills. He might be less naive compared to the original Harry.
He might become more confident in his pure - blood heritage. Since Dorea Black is from an old pure - blood family, she could instill in Harry a sense of pride and belonging that he didn't have in the original story. This could change his attitude towards other pure - bloods and half - bloods.
Well, Harry's character development would be drastically different. Sesshomaru's values of honor and power would seep into Harry. Harry could become more aloof and less empathetic towards others. Instead of the warm - hearted boy we know, he might be more like a lone wolf. His approach to fighting Voldemort would be less about protecting others out of love and more about a personal vendetta and a sense of duty based on Sesshomaru - like values.