Well, Draco's competitiveness might take on a different form. Instead of the more brute - force competitiveness he had as a boy, as a girl he could be more subtly competitive, using her charm and intelligence to get ahead. Also, his pride might be a bit more guarded. He would still be proud, but in a more delicate way, not wanting to show vulnerability as easily as he might have before.
His personality might become more empathetic. As a girl, Draco could start to see things from a different perspective. For example, he might be more sensitive to the way others are treated, especially other girls in Hogwarts.
In terms of his relationships with his Slytherin peers, some might look down on him. But others could be intrigued. Pansy Parkinson, for example, might see Draco as a girl as a threat to her status as the 'queen bee' in Slytherin. However, some of the more open - minded Slytherins could befriend Draco and help her deal with the challenges of being a girl in a very traditional and often misogynistic wizarding society.
His personality might not change completely. He'd still be the intelligent and laid - back person he was. But he might become more empathetic. Since he's now in a female body, he could better understand the struggles that girls face, which could make him more sensitive to others' feelings.
Dipper's personality change could be quite complex. Since he's now a girl, he might feel more pressured to conform to certain standards. This could make him initially more reserved. But as he gets used to it, his adventurous spirit could shine through in new ways. He might start to approach mysteries from a different perspective, one that combines his old way of thinking with the new insights he has from being a girl. He could also become more protective of those he loves, as he now has a different understanding of vulnerability.
I think Zoro's core personality of being tough and fearless would remain. However, being in a female body might make him a bit more aware of certain things, like how he's treated differently by some people. But overall, he'd still be the same Zoro who doesn't back down from a fight and is always looking to improve his skills.
I think Tails' personality would be a mix of his old self and some new elements. He would still be the tech - savvy character we know. But as a girl, he might be more in tune with his emotions. He could also become more diplomatic, trying to bridge the gap between male and female characters in the Sonic universe. For example, he might start to mediate disputes between male and female groups more often, using his new understanding of both sides.
Her personality change could be influenced by the new experiences she has as a girl. For instance, she could be more fashion - conscious, which might seem superficial at first but could actually lead to a deeper exploration of self - expression. This newfound interest could make her more open - minded to different forms of art and creativity. Additionally, she might develop a more collaborative personality. Instead of always being the lone hero type as a boy, she could start to work more closely with others, especially other female characters, sharing ideas and building stronger relationships.
His character would likely become more intellectual. Athena is the goddess of wisdom, so Draco might focus more on learning and knowledge - seeking. He could start to question the pure - blood ideology he grew up with if it doesn't align with Athena's values of wisdom and fairness.
A possible fanfiction plot could be that Draco, now a girl, discovers new magical abilities that were suppressed in his male form. These powers could be related to a more intuitive connection with magic, something that is often associated with femininity in the wizarding world. This newfound power could put her in a position where she has to choose between using it for the benefit of Slytherin or for the greater good of Hogwarts, creating a moral dilemma for her character.
Her personality might not change drastically. Sirius was always rebellious and brave, and as a girl, she would likely still be those things. However, she might become more empathetic as she experiences the world from a different perspective. Maybe she would be more in tune with the emotions of others around her.
If America in Hetalia turns into a girl in fanfiction, her personality might become more nurturing. While the male America was often brash and bold, as a girl she could show more empathy. For example, she might be more patient in diplomatic negotiations, listening more intently to the concerns of other countries.