One common theory is that his parents were part of an ancient Grimm - breeding experiment. This idea stems from the unique nature of William Grimm in the RWBY universe. Another theory could be that they were normal Grimm who somehow mutated to give birth to a more sentient being like William. However, there's no official information yet, so these are all just fan - speculations.
A possible plot is that there is a prophecy about a special Grimm that only Pyrrha, Weiss and William can defeat. The Grimm has been causing chaos across Remnant. Pyrrha is seen as the strong warrior, Weiss as the intelligent strategist, and William as the wildcard with some unknown abilities. They journey together to find this Grimm. Along the way, they learn more about each other and their own powers. When they finally face the Grimm, they have to put all their skills and trust in each other to win. This journey could also involve them meeting other characters from RWBY, getting help or facing additional challenges from them.
Perhaps a story where Pyrrha survives her encounter with Cinder. She then teams up with William, who has a mysterious past related to the Grimm, and Weiss. Together they try to figure out a way to stop a powerful Grimm invasion that threatens all of Remnant. Their friendship and teamwork are put to the test as they face numerous challenges.
One common theme is the struggle for acceptance. Since the OC is often different due to their Grimm - related aspects, they have to fight to be accepted by the RWBY characters. Another is power and its control. Dealing with Grimm - based powers can be a double - edged sword.
Another theme is the power struggle. Faunus may have unique abilities related to their animal traits, and when combined with the threat of Grimm, there's often a struggle for power and control. Some fanfictions show Faunus trying to use their powers to protect themselves from Grimm while also fighting against human oppression.
Some fanfictions show that William Grimm's parents had a very nurturing relationship with him in the early days. They might have recognized his potential and tried to guide him in a different way from other Grimm. However, as he grew older and his ideas diverged from the typical Grimm behavior, the relationship could have become more complicated. There could be conflict as William tries to break away from the traditional Grimm path that his parents were a part of, while still having a sense of loyalty and love for them.
One common theme is Pyrrha's courage in the face of the Grimm. Another could be her growth as a fighter against them. Also, the idea of sacrifice in protecting others from the Grimm is often explored.
Well, popularity can vary. In the RWBY fanfiction world, there are so many different themes and concepts. While the idea of Ruby being a Grimm in a fanfiction is quite different and could potentially be interesting. However, it might not be as mainstream as some other common fanfiction themes like Ruby's relationships with her team members. So, it may not be extremely popular, but it could have a dedicated following among those who like more edgy or unique storylines.
Another theory could be that her real parents were wrongly accused of a crime in the wizarding world and had to give her up. In the fanfic, Hermione might find out about this and try to clear their names. It could be a long and difficult journey filled with mystery and danger.
Well, in the context of RWBY fanfiction, the idea of Grimm breeding is quite a dark and controversial topic. Ethically, it goes against the natural order within the RWBY universe. Grimm are meant to be forces of destruction, and breeding them intentionally, even in fanfiction, can be seen as a perversion of the lore. It also raises questions about the motives of the characters involved in such a practice.
Yes, there might be. The 'RWBY' fandom is quite large and diverse, so it's not surprising that there could be a fanfiction with such an interesting concept as Ruby being part Grimm. It could explore a whole new side of her character and the story's lore.