Harry would likely be more self - reliant and less trusting. Hela's world is all about power and survival, so Harry would have to adapt to that. He'd probably be more secretive and less likely to open up to others easily. His moral compass might also be a bit skewed compared to the original Harry, as Hela's values are not the same as those in the wizarding world.
He'd be tougher. Hela's not one to coddle, so Harry would have to grow up fast.
If raised by Hela, Harry would be a very different character. Hela is a force to be reckoned with, and she would instill in Harry a sense of power and dominance. He would not be the kind - hearted boy we know from the books. Instead, he might be more like a warrior. His magic would be used more as a weapon rather than for the good of others. He might have less patience for the bureaucratic and often - slow ways of the wizarding world. His loyalty would be more conditional, based on power and mutual benefit rather than the pure - hearted friendships he had in the original story.
Well, it could be really interesting. Hela is a powerful and complex character. Harry might grow up with a very different set of values and skills. He could be more ruthless perhaps, or have a darker sense of magic. Maybe he would learn combat skills from Hela that are far different from what he would have learned at Hogwarts.
Hela would likely be more powerful. She is a goddess in the Marvel universe with superhuman strength, the ability to summon weapons, and immortality. Harry Potter, while very powerful in the wizarding world, has limits to his magic. His spells and abilities are mainly within the realm of magic that wizards understand. Hela's powers seem more raw and on a much larger scale compared to Harry's.
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.