A crossover could involve a magical pet from Harry Potter being transferred to the RWBY world. For example, a phoenix. The RWBY characters would be amazed by this magical creature. The phoenix could help them in battles against Grimm. It could also have a connection with one of the RWBY characters, like giving them the ability to rise from the ashes, literally or metaphorically, after a tough battle.
A pet could have unique powers that are useful in both worlds. Let's say a pet has the power of invisibility in the Harry Potter world. In the RWBY world, this power could be used to sneak up on Grimm or avoid detection by enemies. The pet could also form bonds with characters from both universes. For example, it could befriend Ruby and also get along with Harry, and through these relationships, bring the two groups of characters closer together.
It could be really interesting. For example, in this crossover, a wizard from Harry Potter might have a pet that has some characteristics of the Grimm from RWBY. Maybe a cat with the ability to sense approaching danger like a Grimm, and it could use its magic to protect its owner. The RWBY characters could be amazed by the magical pets from the Harry Potter world, and there could be some comical moments when they try to interact with these strange and wonderful creatures.
In the realm of RWBY fanfiction, the possibilities are endless. It's not unheard of for Harry Potter to be Ruby's pet. This could potentially lead to some hilarious scenarios. For example, Ruby might take Harry Potter (in his pet form) on her adventures in the RWBY world. He could use his magic in unexpected ways to help Ruby and her team out of tough situations, or maybe just cause some chaos in the process. The idea combines the magic and mystery of the Harry Potter series with the action - packed world of RWBY in a really novel way.
It could be about Harry having unique abilities as Ruby's pet. Maybe he can sense Grimm before they appear, helping Ruby in her battles. He might also have a special bond with Ruby that allows them to communicate in a non - verbal way.
One idea could be that the Hogwarts students are transported to the world of RWBY. They could learn about Dust and how it's different from magic. For example, Harry could befriend Ruby and they could exchange knowledge about their respective powers. Harry might teach Ruby some basic spells while Ruby shows Harry how to use Crescent Rose.
Ron Weasley and Yang Xiao Long can be a great crossover. Ron's loyalty and sometimes clumsy but brave nature can interact well with Yang's strong and protective personality. Another popular one is Dumbledore and Ozpin. They are both wise leaders in their respective worlds, and a crossover can explore how they would handle the problems of both the wizarding world and Remnant.
In the RWBY world, the female Harry Potter's character would be an interesting addition. Her Hogwarts education has given her a wide range of knowledge. She could use her knowledge of magical creatures to help RWBY characters understand some of the more mysterious aspects of their own world. Her ability to apparate, if it worked in the RWBY world, would be a great asset for quick escapes or surprise attacks. Also, her experience with Horcruxes might give her some unique insights into Salem's immortality situation. She would probably form strong bonds with the RWBY characters over time, sharing her own story of growing up as an orphan and fighting against great odds.
It would be an extremely interesting scenario. Ruby, being a young and adventurous huntress, would have a very unusual pet in Harry Potter. Harry, in his pet form, could still possess his magical abilities. He might be able to use spells to enhance Ruby's weapon, Crescent Rose. For instance, he could cast a spell to make it more durable or give it an extra function. Also, in the social aspect, Ruby's friends would be quite amazed by her pet. They would likely have a lot of questions about where he came from and what he can do. This would open up a whole new set of storylines and interactions within the RWBY fanfiction world.