The powerful families like the Lannisters would likely try to manipulate the situation to their advantage. They'd see Harry as a new player in the power game. However, characters like Jon Snow, who have a sense of justice, might team up with Harry. They would recognize the good in him and see that his leadership could bring about positive changes. And the wildlings might be a bit confused but also hopeful. Harry's ability to deal with different cultures (like the muggles in his world) could make him more acceptable to them compared to the traditional Westerosi lords.
The knights in Westeros would be both intrigued and a bit intimidated. Harry's magic is something they've never seen before. Some might want to learn from him, while others might see him as a threat to their traditional way of fighting. The maesters would be very interested in studying his magic, trying to figure out how it works and how it could be incorporated into their knowledge. The children in Westeros would probably be in awe of him, especially if he shows off some cool magic tricks. They might start dreaming of becoming wizards themselves, which would be a huge change in their aspirations.
Some characters in Westeros might be very suspicious of Harry. His strange clothes and the way he does magic would make them think he's some sort of dark sorcerer. Others, like the more open - minded ones, might be curious and want to learn from him. For example, Tyrion Lannister might see Harry as an interesting oddity and try to figure out how his magic works.
The pure - blood families would be the most resistant. They would see Queen Elizabeth as an outsider and someone who doesn't understand the 'pure' wizarding ways. The Malfoys, for example, would try to undermine her at every turn. But the more progressive wizarding families, like the Weasleys, would welcome her. They would see her as a chance to break down the barriers between Muggles and wizards. And the students at Hogwarts would be divided at first, but as they see the positive changes she brings, more and more of them would support her.
Well, he might use his magic to solve Westeros' political problems. For example, he could use a spell to make the warring factions come to a peaceful negotiation. He might also introduce magic to the people of Westeros, which would completely change their way of life. And his skills in fighting dark forces could be useful in dealing with any threats in Westeros, like the White Walkers.
They might interact with Jon Snow. Harry could see a kindred spirit in Jon, both being outsiders in some ways. Kreacher might be initially distrustful but would come around. With Daenerys, Harry could be in awe of her dragons, and Kreacher might be cautious. They would also have different reactions to Tyrion. Harry might see his intelligence, and Kreacher might be a bit wary of his Lannister name.
Hermione, on the other hand, would likely have a more critical view. She'd analyze the fanfictions for their accuracy in terms of magic lore and Hogwarts traditions. If there were any inaccuracies, she'd be quite perturbed. However, she might also appreciate the creativity that goes into some of the well - written ones that add new dimensions to their magical world.
The fem Harry Potter could also change the power balance. If she aligns herself with a particular house, that house would gain an edge. Her knowledge of magic could be used to uncover secrets in Westeros, like hidden passages in castles or ancient prophecies that were previously unknown. This new information would disrupt the existing plans of the different factions vying for the Iron Throne and other power positions.
Some characters might be excited. They could see him as a new source of knowledge and magic.
The Weasley family would have different responses. Mrs. Weasley would be motherly and concerned about this strange new person. Fred and George would see her as a source of new ideas for their pranks and inventions. Ginny would look up to her as a strong female figure, much like she does with Hermione. And all of them together would gradually get used to having Powergirl around, and they would all grow from the experience of interacting with someone from a completely different world.
Batman would probably be very cautious at first. He'd want to study Harry and his magic to see if it could be a threat or an asset. The Joker might see Harry as a new plaything, a strange and magical being to toy with. Commissioner Gordon would likely be intrigued and hope that Harry could help clean up Gotham's streets.
Some characters might be quite amused. For example, Hermione would probably analyze the fanfiction from a logical perspective, critiquing the plotlines that involve ships. Ron, on the other hand, might be a bit bewildered at first but then find it rather entertaining. Harry himself could be either indifferent or intrigued, depending on how the ships are portrayed. If it's a ship that he has a personal connection to, like his parents, he might be more interested in seeing how the author has envisioned their relationship in the fanfiction world.