One idea could be to create a fanfiction where the characters are in an alternate universe where the Grimm are not the main threat but rather a new type of mechanical enemy. Another could be to focus on a backstory for a minor character, like how they got into Beacon Academy. And a third idea is to do a roleplay fanfiction where the teams have to work together in a different kind of tournament, not the Vytal Festival.
One idea could be exploring what would happen if a new vampire with a unique power entered Forks. This new vampire could disrupt the existing relationships between the Cullens and the other characters in Twilight. For example, they might have a power that could temporarily nullify the abilities of other vampires, leading to some tense and interesting situations.
One idea could be a time - travel plot where a modern - day Naruto fan gets transported into the Naruto world. They could use their knowledge of the series to change certain events. Another could be a story where Naruto has a secret power that he has to hide from everyone, even his closest friends. It would add an element of mystery to his character.
A teacher - student roleplay story can be interesting. The 'teacher' imparts some made - up knowledge to the 'student' in a classroom - like setting. Also, an astronaut and a mission control operator roleplay. They communicate about a fictional space mission, with the astronaut reporting from 'outer space' and the operator guiding from Earth.
A pirate and a mermaid is a great roleplay for kids. The pirate is sailing the seas and accidentally comes across a mermaid. The mermaid can be friendly or a bit mischievous, and the pirate has to figure out how to deal with this new encounter.
One interesting idea could be a crossover of different timelines within RWBY. For example, characters from the past meet the current ones and have to deal with the differences in their worlds. Another could be a crossover of different teams in unexpected ways, like Team RWBY having to team up with a rival team to face a common enemy that is more powerful than any they've faced before. And sometimes, there are crossovers that involve alternate versions of the characters, where their personalities or abilities are slightly different, which can lead to very unique and engaging storylines.
To start writing RWBY roleplay fanfiction, begin by choosing your favorite characters or a group of characters that you want to focus on. Then, think about the kind of situation you want to put them in. Is it a dangerous mission? A mystery to solve? After that, do some research on the RWBY lore if needed. For example, if you want to write about the Huntsmen Academies, know how they function. Start with a simple outline of the story, including the beginning, middle, and end, and then start filling in the details as you write.
One idea could be to have Gilgamesh as a powerful ancient being who awakens in the RWBY world. He could initially be seen as a threat but then form an unlikely alliance with the main characters. For example, he might offer his knowledge of ancient magic to help them fight against a new, powerful Grimm.
One idea could be that the Slenderman somehow enters the RWBY universe during a Grimm attack. The characters of RWBY initially mistake him for a new type of Grimm. But as they start to investigate, they realize he has very different and more sinister powers compared to the Grimm.
One interesting idea could be the redistribution of resources in the RWBY universe. For example, Dust, which is a crucial resource, might be shared more equally among the kingdoms. This could lead to a more balanced power structure and less inequality between the rich and the poor. Another aspect could be the role of the Huntsmen and Huntresses. In a communist - inspired RWBY world, they might work more for the collective good rather than for individual glory or profit. They could be more focused on protecting all people equally, regardless of their social status or wealth.
An OC in RWBY fanfiction could be a character who is a master of stealth. They could use their skills to gather intelligence for the teams at Beacon Academy. Their backstory could involve growing up in a family of thieves, but they decided to use their abilities for good. They might have a Semblance that allows them to become invisible for short periods of time, but it has a drawback like draining their Aura quickly. This OC could interact with characters like Blake, who also has some stealth - like abilities, and they could learn from each other.