He would be more confident in his powers from the start. Since Jean Grey is a very powerful mutant, Harry would inherit some of that self - assurance. He might also be more empathetic, as Jean has strong telepathic abilities that often involve understanding others' emotions.
Well, Harry's magic could be enhanced by Jean's telepathic influence. For example, if he's in a tough battle against a dark wizard, Jean could use her mind - reading ability to anticipate the enemy's moves and relay that information to Harry telepathically, allowing him to better use his spells. And Harry could use his magic to protect Jean from physical harm when her telekinesis is occupied elsewhere.
He'd be more of a badass. Harry would probably be more confident and assertive, taking charge like Fury. He might not be as hesitant in the face of danger as in the original books.
In a battle situation, their powers could combine in really interesting ways. Harry could use magic to create shields or distractions, while Jean uses her telekinesis and telepathy to attack the enemy from different angles. Their combined powers would make them a formidable team, and they could develop new strategies that are unique to their combined power set.
He would be more in tune with nature. Since Dionysus is associated with nature, Harry might have an instinctive understanding of plants and animals that normal wizards don't. For example, he could communicate with magical beasts on a deeper level.
He would be much more aggressive in combat. With Ares as his father, he'd have a natural warrior instinct. He might not shy away from a fight like the original Harry. For example, he could be the first to charge into a battle against Death Eaters.
If Harry Potter were raised by Jean Grey, it would be a total blend of two very different fictional universes. Harry would grow up with a strong female figure who is used to dealing with great threats. Jean could teach Harry about self - control, especially when it comes to his magic, as she has to constantly keep her own powers in check. This could lead to a Harry who is more in tune with his emotions and has a different moral compass influenced by Jean's values of justice and protection for the weak.
He would be more physically capable. Natasha's training would make him better at hand - to - hand combat compared to the original Harry. He might also be more confident in dangerous situations.
Harry would be a different character in this fanfiction. He'd have a different upbringing, being the son of James Bond. This would give him a different perspective on the world. He would be more attuned to the Muggle world's espionage and intrigue, which would affect his relationships at Hogwarts. He might be a bit of an outsider among his peers, as his experiences and knowledge would be more diverse. He could be more of a loner, but also more self - reliant. His decision - making would be influenced by Bond's rational and calculated approach. For example, when facing a dark wizard, he might analyze the situation more like a spy, looking for weaknesses and planning several steps ahead, rather than just reacting impulsively with magic as the original Harry might do in some cases.
It would be really strange yet interesting. Jean Grey's powers could have a huge impact on Harry's upbringing. Maybe he'd inherit some of her telepathic abilities in a very different magical world. And the X - Men and Hogwarts elements would be mashed up in a unique way.
He would likely become more hardened. The Grey Wardens face constant danger and hardship, so Harry would have to toughen up. His view of the world would expand as he gets involved in a different kind of fight against evil.