One idea could be a fanfiction where the Grimm sisters travel to a modern city and have to deal with magic that has been corrupted by technology. Another could be a story where they meet their ancestors and learn new magic from them. Maybe a fanfiction where they get trapped in a fairy - tale world that has been twisted in a really strange way.
A great Sisters Grimm fanfiction idea is to explore what would happen if they had to team up with their enemies to fight a greater evil. For instance, a powerful dark wizard is about to destroy all of the fairy - tale realms and they have no choice but to work with the villains they usually oppose. It could also be interesting to write about a day in the life of the Grimm sisters when there are no major threats, just their normal interactions with the fairy - tale characters in Ferryport Landing.
A plot idea could be that the Sisters Grimm discover a hidden realm within their own world that has all the forgotten or lost fairy - tales. They then have to figure out how this realm is connected to the problems in their own town. Also, a story where they swap powers or abilities for a day and have to deal with the chaos that ensues. For example, if Sabrina has Daphne's ability to see the good in people and Daphne has Sabrina's more cynical view, it would lead to some interesting character development.
One idea could be a crossover where the demigods from Percy Jackson's world meet the Grimm sisters. Maybe they team up to fight a common enemy that threatens both their realms, like an ancient evil that has the power to disrupt the balance between the magical world of the Grimm sisters and the mythological world of Percy Jackson.
Perhaps a fanfiction where a long - lost ancient magic resurfaces in a character, enabling them to control Grimm. The character then has to struggle with the moral implications of using this power, as controlling Grimm is generally seen as a very dark and dangerous ability in the RWBY universe. They might try to use it for good, like stopping Grimm attacks without harming the Grimm, but face opposition from others who don't believe it's possible to use such a power benevolently.
Well, one interesting idea could be exploring the relationship between Ruby and the Grimm in a unique way. Maybe she discovers a way to communicate with them, which changes the whole dynamic of the story.
One idea could be to combine the magical world of Harry Potter with the dark and fairy - tale - like elements of Grimm. For example, having the characters from Harry Potter encounter Grimm - inspired creatures in the Forbidden Forest. Maybe a werewolf - like creature similar to the ones in Grimm tales that has a different set of magical abilities.
A possible fanfiction could focus on a team-up between RWBY and Naruto characters against a common enemy that has the power of both Grimm and some dark ninja jutsu. For example, they might have to face an evil organization that is using Grimm to create chaos in the Naruto world while also using forbidden ninja arts. Or perhaps a fanfic could explore the concept of a RWBY character having a Sharingan - like ability that they gain in the Naruto world and how it changes their combat style and relationships with others.
One idea could be exploring the origin of the Grimm in a unique way. Maybe there's a long - forgotten ancient civilization that had a hand in creating them. Another could be a story about a Grimm that has some sort of self - awareness and is trying to break free from the normal Grimm behavior. Or perhaps a fanfiction where a character from RWBY has to team up with a Grimm - like creature to defeat a greater evil.
A great concept for a RWBY Parasitic Grimm fanfiction could be a story where a character discovers that they have a unique ability to resist or even control the Parasitic Grimm. This could lead to a conflict within the RWBY universe as some see this character as a threat while others see them as a potential solution to the Grimm problem. You could also explore how the Parasitic Grimm's existence changes the balance of power in the world, not just between humans and Grimm, but also among different factions of humans.
Well, a possible plot in 'rwby controls grimm fanfiction' is that the whole team RWBY starts to experiment with Ruby's new - found ability to control Grimm. They could face moral dilemmas, like whether it's right to use the Grimm as weapons. Maybe they try to use controlled Grimm to gather intelligence about Salem's plans. Or, they could accidentally create a new type of Grimm - hybrid when Ruby's control goes a bit wrong during an experiment.
Perhaps a half - Grimm character is hunted by both Grimm and humans. The Grimm see it as an abomination, and the humans fear its power. The story could follow their journey to find a place where they can be accepted. They might encounter various characters from RWBY along the way, and their interactions could lead to different moral dilemmas.