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.
She can become more sympathetic. Sometimes in fanfiction, authors might give her a tragic past that makes her actions more understandable. For example, if she was wronged by the wizarding community in the past, it could justify her actions against them in the fanfiction.
He'd be more adaptable. Quarians live in a different way than wizards, so Harry would learn to be flexible in new situations.
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.
In this fanfiction, Harry might grow up with a different set of values. Maleficent is a powerful and complex character. He could learn dark magic more easily, but also might develop a sense of self - preservation and independence from her teachings. Maybe he would be more feared in the wizarding world due to Maleficent's reputation.
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.
Harry would probably be more physically fit and combat - ready. Sasuke would train him in ninja ways, so he'd be better at hand - to - hand combat compared to the regular Harry. His approach to facing enemies would be more direct and less about relying solely on magic. He might also be more independent, as Sasuke is not one to encourage over - dependence on others.
He'd be tougher. Hela's not one to coddle, so Harry would have to grow up fast.
Harry would be less socialized in the typical human way. He might not understand things like friendship the same way. He could be more territorial and protective. His magic might also be affected. He might use it more instinctively, like using a spell to protect his 'territory' which in this case could be the area where his wolf pack lives.
He'd likely be much more morally ambiguous. Harry would probably have less regard for the rules and traditions of the wizarding world.