One interesting concept could be the exploration of their opposing natures. Ruby is often seen as pure - hearted and full of hope, while Cinder is more devious and power - hungry. In fanfiction, this contrast can lead to some intense character - driven stories where they either learn from each other or clash in more complex ways than in the original series.
If in fanfiction Cinder is Ruby, it would be a total game - changer. Ruby is the symbol of hope in RWBY, and Cinder is a symbol of destruction. So, this switch would create a really interesting narrative. The story could explore how Cinder, in Ruby's body or identity, would deal with Ruby's responsibilities. Would she try to uphold Ruby's values? Or would she slowly corrupt them? And how would the other characters react? They might initially trust her because she looks like Ruby, but as they start to notice the differences in her behavior, it would lead to a lot of conflict and drama.
One common theme is the exploration of the relationship between good and evil. Ruby represents the good side, and Cinder is often seen as the antagonist. Their relationship in fanfictions might explore how they can influence each other's views on this dichotomy.
One great RWBY Ruby and Cinder fanfiction is 'The Unlikely Alliance'. It explores a scenario where Ruby and Cinder are forced to work together against a common enemy. The story does a great job of developing their characters in this new context.
One good 'rwby ruby x cinder fanfiction' story could be 'The Unlikely Bond'. It explores how Ruby and Cinder, who are on opposite sides in the original series, might find common ground. Another is 'Red and Ash', which delves into a more complex relationship between them, where their powers interact in unexpected ways. There's also 'Ruby's Redemption of Cinder', where Ruby tries to turn Cinder from her evil ways.
Another option is FanFiction.net. Although the quality can vary, it has a vast number of RWBY fanfictions. You can use the search function and type in 'Cinder x Ruby' to see what comes up.
One common theme is redemption. Cinder is often portrayed as a character who might find redemption through her interactions with Ruby. Another theme is the power of understanding, as they come from very different sides in the RWBY world.
The exploration of their backstories together is also a theme. Writers may create scenarios where Ruby and Cinder's pasts are somehow intertwined, perhaps revealing secrets that change their relationship in the RWBY universe.
I'm not sure specifically as there could be many different takes in such a fanfiction. It might involve Ruby growing up under Cinder's influence, which could lead to a complete change in her character, values, and fighting style. Maybe Cinder has some ulterior motives for raising Ruby, like using her as a weapon or a pawn in her grand scheme against Beacon Academy and the other Huntsmen and Huntresses.
There are some great ones out there. Some focus on an alternate universe where Ruby and Cinder have to team up for some reason, like to defeat a common enemy that's even more powerful than Salem. Others might explore a more romantic side of their relationship, showing how they gradually come to understand and care for each other in unexpected ways.