One idea could be a character from RWBY gaining the power of the Speed Force and using it to outmaneuver their enemies in combat. For example, Ruby could use the speed to create afterimages and confuse Grimm while she attacks them from unexpected angles.
Maybe there could be a story where the Speed Force is somehow connected to the Dust in the RWBY world. A fanfiction could explore how a character harnesses this connection to gain new abilities. They might be able to use the speed to super - charge their Dust - based weapons, like making Weiss's ice attacks spread faster or Yang's fire blasts more intense.
Another interesting plot could be a tournament where teams from both RWBY and Battle Force 5 compete. But as the tournament progresses, they start to realize that there is a hidden conspiracy behind it, and they must work together to expose the truth and stop those behind it.
One idea could be an OC who discovers they have a unique connection to the Speed Force that allows them to time - travel in a different way than the Flash. For example, they can visit alternate timelines related to speedsters. Another idea is an OC using the Speed Force to create speed - based constructs, like swords or shields. It would add a new dimension to their powers in combat.
Ruby would be a likely candidate. She's already known for her speed and agility in combat. If she were to be affected by the Speed Force, it would enhance her existing abilities to a whole new level. She could move so fast that she becomes almost invisible to her enemies, and her scythe attacks would be even more deadly with the added momentum.
A plot idea could be that a portal opens between the My Hero Academia world and the DC universe where the Speed Force exists. A hero from MHA gets sucked into the DC world and has to learn to control the Speed Force to get back. Along the way, they meet DC characters and learn new ways to use their speed - based powers.
One idea could be Percy Jackson somehow gets connected to the Speed Force. Maybe during a quest, he stumbles upon a portal or an ancient artifact that links him to this powerful force. He could then gain super - speed, but struggle to control it at first. His demigod powers might interact in strange ways with the Speed Force, like his water - based powers could be enhanced when he moves at high speeds, creating some kind of water - speed hybrid attacks.
Well, in 'dark side of the force fanfiction', a plot idea could be that a once - good Jedi starts to have doubts after being betrayed by his own order. He then begins to explore the dark side in secret, thinking it might offer a better way. Or there could be a story about a Sith who tries to turn a whole planet to the dark side by using a powerful mind - control device. Also, a plot where a character from a non - Force - sensitive species somehow gains access to the dark side of the Force through a strange experiment.
Another interesting plot could involve Naruto teaming up with characters from the Star Wars universe who have also been brought into the Naruto world. Imagine Naruto and Luke Skywalker working together to defeat a common enemy that combines the threats from both universes. They could learn from each other's powers and techniques, making for an exciting story.
A plot could involve an esports competition where teams from different kingdoms in the RWBY universe compete. The story could explore how the RWBY team overcomes rivalries and strategic differences. They might also have to deal with a mysterious hacker trying to disrupt the tournament.
One idea could be Noctis arriving in the RWBY world and having to learn about Dust and how to use it in combat. Maybe he teams up with Team RWBY to fight against a new type of Grimm that his unique skills are well - suited to defeat.
One idea could be a mercenary who is hired by a mysterious client to steal an ancient relic from Beacon Academy. He has to navigate through the various defenses and teams of Huntsmen and Huntresses.