Bakugou's pride would likely be affected. As a girl, he might feel a bit more self - conscious about it. He could be more defensive when people question his abilities. At the same time, he might also learn to use his new form to his advantage in some situations, like when trying to deceive opponents in battle. His personality would be a mix of his old self and new adaptations due to the change.
I think his relationships with his female classmates would change a great deal. He might start to understand their experiences more. For example, he could become more empathetic towards Uraraka when she talks about the challenges she faces as a girl in a male - dominated hero training environment. And his overall personality would shift a bit to incorporate this new - found understanding while still maintaining his Bakugou - like spunk.
His core personality might not change much. He'd still be brave and protective. But he might be more in touch with his emotions, as society often allows women to be more openly emotional. He could also be more perceptive about the subtleties in relationships.
His personality might become more curious, like a cat. He could be more easily distracted by shiny things or new scents. Also, he might become a bit more independent, as cats tend to be, but still hold onto his strong sense of justice and protectiveness for his friends.
Well, in his cat form, Pitch Black could become more territorial. He might hiss at other animals or people who come too close to his 'domain'. His once menacing presence could be translated into a more stealthy and watchful nature. He would still be cunning, but now he would use his cat - like abilities to his advantage, like sneaking up on things. And perhaps his patience would increase, as cats are known to wait for the perfect moment to pounce.
He could start to notice things from a different perspective. As a girl, Bakugou might become more aware of the way others perceive her appearance. She might also start to develop different interests, like taking more interest in fashion or something that she previously didn't care about. This could lead to some really interesting character development, especially if she still tries to hold on to her tough - guy (or now tough - girl) attitude.
The character might become more in touch with their emotions. As a girl, they could be more likely to express vulnerability. For example, they might cry more easily or be more open about their feelings of fear or sadness.
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.
His personality might become more innocent. Without the weight of his usual responsibilities and power, he could be more curious and open - minded. For example, he might be more willing to explore new things instead of being so focused on winning and power as he usually is.
His relationship with Ron would definitely change. Ron might be a bit more hesitant around her at first, not really knowing how to act. But as time goes on, they could develop a deeper, more platonic bond. It would be like Ron having a sister all of a sudden.
Well, with Dipper becoming a girl in the fanfiction, his relationship with Mabel would have a new dynamic. Mabel would be all about embracing Dipper's new form. She'd be planning slumber parties and trying to give Dipper a new 'girly' identity. As for Wendy, Dipper might find himself more in tune with Wendy's interests on an emotional level now that he's a girl. Wendy might be more open to sharing her feelings with Dipper - girl. His relationship with the townspeople could also change. Some might be more accepting, while others might be a bit more judgmental. And his relationship with the supernatural elements in Gravity Falls could be different too. Maybe some entities are more attracted to his new form, while others are repelled, which would lead to a whole host of new adventures and challenges in their relationships.
His personality might become more reserved. As a sphinx, he'd be more of an observer, so he might think more before acting, which is different from his sometimes impulsive nature as a human. He could also become more patient, as sphinxes are known for their calm demeanor.