He might become more refined in his manners. The Malfoys are a very proper pure - blood family, so Harry would likely be taught to act more like them. For example, he'd probably have better table manners and a more sophisticated way of speaking.
Harry could develop a more guarded personality. Since the Malfoys have a certain reputation, he may need to be careful about his actions and words. He might also become more calculating in his interactions, learning from the Malfoy family's political maneuvers.
Harry's character would be a blend of his original self and the Malfoy influence. He'd still have his innate sense of justice, but it might be expressed in a more Slytherin way. He could be more politically astute, understanding the power dynamics within the wizarding world better. And his relationship with magic would change. Instead of using it for pure altruistic reasons like before, he might use it to gain an edge in certain situations, at least in the beginning before he fully matures and reconciles his two different sides.
If adopted by the Malfoys, Harry's personality would be a complex mix. He would be exposed to the Malfoy's elitist views from a young age. This could make him initially seem cold and distant. However, his innate goodness would still be there. He might struggle to reconcile his true self with the Malfoy persona he's expected to have. For example, he might be polite and proper in public as a Malfoy, but secretly help those who are oppressed by the pure - blood ideology, showing that his original kind - hearted personality is still fighting to surface.
His personality would likely be a blend of his natural Gryffindor traits and the influence of the Malfoy family. He might become more guarded and calculating at times, due to the Malfoy's sly nature. But his underlying sense of justice and loyalty would still shine through. For example, he might be more hesitant to trust people initially compared to in the original story.
Harry could also become more refined in his manners and social skills. The Greengrass family is likely to have a certain level of propriety and sophistication, which would rub off on Harry. He may learn to interact more gracefully with the upper echelons of the wizarding society.
Harry's character could change in terms of his confidence. Growing up with the Delacours, he may have more exposure to high - profile wizarding events and people. This could boost his self - assurance. He may also become more open - minded as he experiences different magical cultures. Instead of just relying on what he learned at Hogwarts, he would have the Delacour family's knowledge to draw from. And he might develop a more flamboyant side to his personality, influenced by the Veela - like qualities of the Delacours.
Harry's character might develop a more refined sense of magic. With the Malfoys' influence, he could become more aware of the subtleties of pure - blood magic. His self - confidence could also change. Instead of relying on his Gryffindor bravado, he might learn to be more calculating like the Slytherins. For example, in dealing with school bullies, he might use his wits rather than just charging in.
In the 'Harry adopted by the Malfoys' fanfiction, one possibility is that Harry would receive a very different kind of magical education. The Malfoys might try to mold him into a Slytherin - like wizard, but Harry's own Gryffindor - like courage would constantly be at odds with that. Also, his relationship with Draco could be very complex, ranging from initial rivalry as they are brought up in the same household to a possible understanding and even friendship later on.
In 'fem Harry adopted by Malfoys' fanfiction, fem Harry's character development is complex. Initially, she is a vulnerable character, having lost her previous family or situation. When adopted by the Malfoys, she is exposed to a world of luxury and strict pure - blood values. At first, she might resist some of these values, but gradually, she starts to understand the reasons behind them, at least to some extent. Her relationship with the Malfoy family members, especially Draco, can be a catalyst for her growth. She may learn to be more diplomatic, as she has to navigate the often - tense relationships within the family. Also, her magical abilities might develop in new ways as she is exposed to different magical teachings and resources available in the Malfoy household. This all combines to transform her from a somewhat naive character into a more worldly and self - assured one.
She would probably become more guarded and secretive. In the original story, Hermione is quite open with her friends about her thoughts and feelings. However, in the Malfoy household, she'd have to hide a lot of her true self. Her character development might see her becoming a master of deception, pretending to go along with the Malfoy's views while secretly working against them. This would add a whole new layer of complexity to her personality as she tries to balance her true self with the persona she has to present to the Malfoys.