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.
There's also 'RWBY in Bloodborne's World'. This fanfiction takes the RWBY characters and drops them into the terrifying and mysterious setting of Bloodborne. It's great for those who like to see how different characters adapt to a new and dangerous environment. It often has some intense fight scenes as the RWBY girls use their skills against the nightmarish creatures of Bloodborne.
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.
One common theme is the clash of different mythologies. For example, when Bloodborne crosses with other game universes, their respective mythologies about gods, monsters, and the afterlife collide.
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.
A common element is often the merging of the two distinct worlds. For example, the unique weapons from RWBY might be combined with the dark and gothic atmosphere of Bloodborne. Also, the characters' abilities could be a mix. The OC (original character) might have traits from both universes, like a RWBY character with a Bloodborne - inspired power.
One interesting 'bloodborne crossover fanfiction' could be the one where Bloodborne characters cross over with the world of Dark Souls. It creates an exciting new universe with different combat styles and lore combined.
In some Bloodborne hunter crossover fanfiction, a hunter could cross over into a modern - day setting. This would lead to a clash of the archaic and the contemporary. The hunter, with their Victorian - era clothing and archaic weapons, would be a strange sight in a world of skyscrapers and cars. They might have to adapt their hunting skills to deal with modern threats like criminals or supernatural entities that exist in this new world.
The character designs could be a really cool part of the crossovers. The RWBY characters are known for their distinct looks, and Bloodborne has some really grotesque and fascinating creature designs. Imagine if some of the Bloodborne enemies were incorporated into RWBY's world as new types of Grimm, or if the RWBY characters got some of the more badass - looking armor from Bloodborne. The Hunts Marshal could also introduce new weapons and fighting styles that are a blend of their own and what's seen in Bloodborne. This would not only make for some visually stunning scenes but also add a new layer of complexity to the combat in the RWBY world.
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.