Kylo Ren would be different in a Clone Wars - set fanfiction because he'd be out of his normal time period. He'd be surrounded by different technology and a different kind of warfare. His dark side powers might seem more extreme compared to the Jedi of the Clone Wars era. Also, his modern - looking lightsaber would be quite distinct from the ones used then.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfiction from various fandoms, including Star Wars, and you're likely to find quite a few female Kylo Ren fanfiction there.
One popular female Kylo Ren fanfiction might be those that explore her as a powerful Sith apprentice. For example, stories where she challenges the traditional gender roles within the First Order. Another could be ones that focus on her relationship with other characters, like Rey, but from a female Kylo Ren perspective, showing a complex dynamic between them.
In a fanfiction where Kylo Ren meets Anakin, it could be a very intense encounter. Anakin, with his complex past and great power, might initially be skeptical of Kylo Ren. Kylo Ren, on the other hand, could be in awe of Anakin, seeing him as a sort of legend. They might start by sizing each other up, with Anakin perhaps trying to gauge the darkness in Kylo Ren. This could lead to a duel where they test each other's skills. Anakin might use his experience from the Clone Wars, while Kylo Ren would rely on his training under Snoke. Eventually, they could find some common ground in their struggle with the dark side, and Anakin might try to guide Kylo Ren towards a more balanced path.
There are likely other characters from the First Order. For example, General Hux. His rivalry with Kylo Ren and his own ambitions within the First Order contribute to the overall plot. Also, characters from Kylo Ren's past, like his parents Han Solo and Leia Organa, are important even if they may not be as present in the novel as in other parts of the Star Wars saga, but their influence on him is still a big part of his story.
Another theme is redemption. Kylo Ren is a complex character who has done some dark things. In many fanfictions, Hermione's presence can act as a catalyst for his possible redemption. Her strong moral compass can influence him to make better choices.
Common themes include the exploration of power. If Kylo Ren is pregnant, it might be related to some new power source or a different understanding of the Force. The theme of responsibility also comes into play. He has to be responsible for this new life, which could change his actions and decisions. Additionally, the theme of connection is often seen. His pregnancy could create new connections with other characters, either through support or through conflict, as they react to this unexpected situation.
Another theme is power struggle. Since Kylo Ren is a powerful character in the Star Wars universe, the OC often has to navigate her own power or lack thereof in relation to him. This can create interesting storylines where the OC is trying to assert herself or find her place while dealing with Kylo Ren's dominating presence.
Power is a common theme. Just like the male Kylo Ren, the female version often struggles with her power, whether it's the power of the Force or political power within the Star Wars universe.
The pregnancy could bring out a more protective side in both of them. Kylo Ren might become less consumed by his power - hungry ways as he focuses on protecting Rey and the baby. Rey, on the other hand, might soften towards Kylo Ren even more, seeing him as the father of her child. Their relationship could transform from a tumultuous one to a more stable and loving partnership as they navigate the challenges of impending parenthood.