Sinister characters like Adam Taurus from RWBY could also be interesting in a Bloodborne crossover. His already dark and violent nature could be enhanced in the Bloodborne setting. He could form alliances with some of the more sinister forces in Bloodborne, or perhaps he becomes a sort of anti - hero, fighting against the greater evils in the Bloodborne world while still being a morally ambiguous figure.
One idea could be that the Grimm in RWBY are somehow related to the beasts in Bloodborne. Maybe there's a common origin or a dark force that controls both. For example, the Grimm could be an earlier form of the Bloodborne beasts, and the Huntsmen and Huntresses have to deal with a new type of Grimm that has the characteristics of the Bloodborne creatures, like a more sentient and intelligent type of Grimm.
Ruby would be really interesting. Her innocent and positive attitude would contrast greatly with the dark and desolate Fallout world. She'd be like a ray of hope in the wasteland. Her scythe - fighting skills would also be unique and useful against the various threats in Fallout. She might try to befriend some of the mutants or ghouls, seeing them not as just monsters but as living beings who need help.
Ruby would be really interesting. Her energetic and optimistic nature would contrast greatly with the often dark and power - hungry characters in the Overlord world. She could inspire some of the downtrodden minions with her belief in the good of people. Also, her scythe skills and speed would be a unique addition to the battles in the Overlord universe.
One unique feature is the blend of different art styles. Bloodborne has a very dark, gothic, and somewhat medieval - inspired art style, while RWBY has a more modern, anime - like style. In the crossover fanfiction, these two styles can create a really interesting visual in the reader's mind when they imagine the story.
I think Ruby would be really interesting. Her optimistic and fearless nature in RWBY would contrast well with the often dark and power - based world of Overlord. She could bring a sense of hope and naivete that would either endear her to the Overlord characters or make her a target. Also, her scythe - wielding skills and her use of her speed Semblance could be unique in the Overlord world.
I think Blake would also be a great focus. Her stealth and agility would translate well in the Monster Hunter world. Plus, her cat - like Faunus traits could give her an edge in certain situations, like tracking or sneaking up on monsters.
Ruby from RWBY could be a great focus. Imagine if she were to encounter the psychic abilities from Mob Psycho 100. She could learn about a different kind of power and how to incorporate it into her fighting style. Her positive and determined attitude would also make for some interesting interactions with the more reserved or complex characters from Mob Psycho 100.
I think Ruby would be a great choice. Her innocence and determination in RWBY could be an interesting contrast to the often more battle - hardened and power - hungry characters in Dragon Ball. She could learn a lot from them about power and also teach them about the importance of friendship and teamwork in a different way.
The unique settings that result from the crossovers are also a big draw. When Bloodborne crosses with 'Metroid', you might have a scenario where the hunters are exploring the alien landscapes of the Metroid world. The combination of Bloodborne's gothic architecture and Metroid's sci - fi environments makes for a visually and conceptually exciting read. It can also introduce new gameplay - like elements into the story as the characters adapt to the new settings.
I think Ruby would be really interesting. Her innocent and determined nature would be fascinating to watch as she explores a new world. She might be the one to first reach out to the new world's inhabitants.