Ares could become more nurturing. As a male, he was probably focused on war and conquest. But as a female, he may start to show more care and concern for those around him. He might be more interested in building relationships and taking care of the family or community. This change could also be due to the way his family now interacts with him, expecting him to be more of a caregiver in some aspects.
He might become more empathetic. Since society often expects different behaviors from females, he could start to understand the feelings of others better. For example, if he was previously dismissive of the pain of civilians in war, as a female, he might start to feel more compassion.
His aggression could be tempered. In many cultures, females are not typically as openly aggressive as males are often portrayed. So Ares, in his new female form, might find that his natural inclination towards aggression is less accepted. This could lead him to find more diplomatic ways to solve problems, like using negotiation and persuasion instead of brute force.
One possible plot could be that his family, perhaps in an attempt to teach him a lesson about empathy or to change his aggressive nature, uses some sort of magic or potion to turn him female. This new form might make him experience the world in a different way, facing discrimination or different expectations that he previously didn't understand. He could then start to see the flaws in his old ways and strive to become a better version of himself, regardless of gender.
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.
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.
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.
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.
If turned into a kid, Deadpool's personality would lose some of its edge. He'd be more impulsive in a child - like way, not thinking about the consequences as much as he does as an adult. His love for chaos would remain, but it would be more like a child's playfulness. He might also be more vulnerable in a sense, showing emotions more openly like a kid does.
His personality might become more in touch with his emotions. As a girl, Peter could be more empathetic and sensitive. He might also be more cautious in some situations, as society often treats girls differently. For example, he might not be as quick to jump into a fight without thinking about the consequences more carefully.
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.
Sasuke's personality would change quite a bit. His pride would still be there, but it would be expressed differently. He might be more aloof as a cat, not wanting to be coddled. He'd also be more territorial, marking his space in ways a normal Sasuke wouldn't. And he'd be more independent, trying to solve his problems on his own even though he's now a small cat.
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.