Harry's character would develop a sense of divinity within him. Since he's raised by Greek gods, he'd have a different relationship with power. He wouldn't fear power as much as he might in the original story. Instead, he'd see it as a natural part of his being. He'd be more in tune with nature and the elements, like the gods are. His relationships with other characters would also change. He might be more aloof towards some of his Hogwarts friends at first, as he'd have this whole other world of experiences from his upbringing among the gods that they couldn't understand right away.
He would likely be more confident. Growing up with gods would give him a sense of self - assurance that he lacks in the original story. He might be less hesitant in using his powers.
Harry's character would likely become more confident. Knowing he is the son of Greek gods would give him a sense of greater purpose and power. He might start to question the rules of the wizarding world more, as his new identity makes him part of something bigger. His loyalty to his friends would remain strong, but he might be more independent in his actions, relying on his new demigod powers to solve problems.
Harry could be more distrustful of adults. Since he doesn't have a positive family figure in the orphanage, when he meets the wizarding world adults like Dumbledore, he might be more skeptical and less likely to blindly follow them. Also, his sense of loyalty might be more focused on the orphans he grew up with rather than just his Gryffindor housemates at first. He might have a harder time adjusting to the hierarchical and sometimes elitist nature of the wizarding world, coming from an environment where everyone was more or less on equal footing in terms of being an orphan.
Harry would likely be more confident in the Muggle world. Since Tony Dinozzo would expose him to all kinds of Muggle situations from a young age, Harry wouldn't be as shy or out of place among Muggles as he was in the original story. For example, he might be more comfortable using Muggle technology.
His character would be more open - minded towards different species. Since Xavier promotes coexistence among mutants and humans, Harry would likely apply the same principle to magical creatures and non - magical people. He'd be less likely to have the pure - blood - centric views that some in the wizarding world hold.
Harry's character would develop in a more patient and self - assured way. Merlin's long - lived experience and his different approach to magic would shape Harry. Instead of the somewhat isolated and often confused boy in the original story, he would be more open - minded. He would be exposed to different magical cultures and ideas from Merlin, which would make him a more well - rounded wizard. He would also be more in tune with the ancient and hidden parts of magic, and this would give him a different kind of power and presence.
Harry's character would develop a greater sense of justice and order. Amelia Bones is associated with the Ministry of Magic and upholds the law. Harry would grow up with a stronger understanding of the wizarding legal system. He might also be more diplomatic in his approach to problems, having learned from Amelia's way of handling things in the wizarding community.
His character would likely be more confident. Growing up with a loving mother like Lily, he wouldn't have the insecurities that came from the Dursleys' treatment.
Harry might be more self - assured. Charlus, being from an older time, could have a more no - nonsense approach to teaching Harry magic. This would make Harry more confident in his abilities. For example, he might not second - guess himself as much as he does in the original story.
Harry could be more independent and self - reliant. Growing up with a Pegasus rather than in a human family means he has to rely on himself and his Pegasus friend more. He would learn to fend for himself at a younger age, which would make him bolder in the face of danger.