Another plot idea is to focus on the backstories of the existing characters in the 'a game of grimm consequence'. Maybe there's a hidden connection between two characters that is only revealed during the game, and this connection has far - reaching consequences for the outcome of the game and their relationships.
One idea could be exploring a new character who enters the game and has a unique ability that changes the dynamics. For example, a character with the power to manipulate time within the game world. This could lead to interesting twists as they try to outwit the rules of the Grimm Consequence.
Well, often the main character from the original Grimm's stories are popular. For instance, Little Red Riding Hood. In fanfiction, she can be portrayed as a more cunning player in the game, using her wits to survive the Grimm Consequence.
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.
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.
One idea could be that the Grimm creatures start to appear in the wizarding world. Harry and his friends have to use both magic and knowledge of Grimm lore to fight them. For example, they might discover that some dark magic has opened a portal between the two universes.
A plot idea could be that Adalind's past comes back to haunt them. An old enemy or a past mistake she made resurfaces, and Nick has to decide how much he is willing to stand by her. They could also start a family, and the children inherit unique abilities from both of them. This would lead to a whole new set of challenges as they try to protect their family from those who might want to use their children's powers for their own gain.
One idea could be a character who is turned into a Grimm due to a failed experiment. They then have to struggle with their new form and inner Grimm instincts while still having memories of their human life. Another could be a human turned Grimm as a result of a dark magic spell, and they try to find a way to reverse it while being hunted by other Huntsmen and Grimm alike.
One plot idea could be that a female grimm has some sort of mutation that gives it the ability to communicate with humans. This causes chaos as the RWBY characters have to decide whether to trust it or not. Another idea is that a female grimm is the last of its kind and the RWBY team discovers that it holds a key to an ancient mystery in their world. Maybe it has knowledge about a long - lost weapon or a hidden place.
One idea could be that the self - insert character has a special ability to communicate with Grimm on an empathetic level. This could lead to some really unique storylines where they try to understand the Grimm's motives rather than just fighting them. For example, they might discover that some Grimm are being controlled by a greater, more sinister force, and they have to figure out how to break that control.
One idea could be Harry discovers a hidden power within the Grimm world that no one else has. This new power could lead him on a journey to uncover secrets about the origin of the Grimm. Another idea is Harry befriends an outcast Grimm creature and together they face the prejudices of the Grimm society.