It's hard to say for sure, but Ruby Rose has the potential to be very powerful in a crossover. Her silver - eyed warrior powers are still somewhat of a mystery in RWBY, and if combined with the knowledge and abilities from Hellsing, she could become a force to be reckoned with. Also, her leadership skills and the fact that she is constantly growing in power throughout RWBY could give her an edge in a crossover scenario where she has to adapt to new threats like the vampires from Hellsing.
In a 'hellsing and rwby crossover fanfiction', Seras Victoria from Hellsing could also be a very powerful character. She has vampiric abilities like enhanced strength and speed, and she is still learning to control and expand her powers. If she were to cross paths with RWBY characters, her combat skills and her unique vampiric nature could make her a significant threat. Additionally, her loyalty to Alucard and Hellsing could drive her actions in a crossover, and she might be more adaptable to the RWBY world compared to some of the other Hellsing characters.
Most likely Alucard. In the Hellsing universe, he is an extremely powerful vampire with a vast array of abilities. In comparison, the vampires in Twilight, while having their own strengths, seem rather weak when pitted against Alucard. He can manipulate shadows, has superhuman strength far beyond what we see in Twilight vampires, and his immortality is of a different level altogether.
One interesting concept could be the combination of Hellsing's dark and gritty vampire lore with RWBY's unique world of Huntsmen and Grimm. For example, seeing how the powerful vampires from Hellsing would interact with the various characters in RWBY, like Ruby and her team. Maybe the vampires would be seen as a new type of Grimm by the RWBY characters at first, leading to some initial confusion and intense battles.
It's hard to say for sure, but Alucard has a strong case. His vampiric powers are extremely formidable, including his ability to regenerate, his superhuman strength, and his vast array of weaponry like the Casull and the Jackal. He also has centuries of combat experience. However, in the wizarding world, Dumbledore is an incredibly powerful wizard with a deep understanding of magic. He could potentially find ways to counter Alucard's powers, like using powerful spells of binding or banishment.
Another candidate could be Ruby with the Silver Eyes. If her power could be enhanced with DBZ - like Ki training, she might become the most powerful. But then there are also characters like Beerus who could potentially wipe out entire planets in both universes. So it's really a complex comparison.
It could make them more aware of different power systems. The Hellsing Abridged fanfiction has a complex power structure with vampires and vampire hunters. RWBY might start to think about how their own powers compare and contrast. For example, Ruby's scythe - wielding skills and semblance might seem different from the more supernatural powers in the fanfiction.
One common theme is the clash of different power systems. RWBY has its Dust - based powers and Huntsmen, while Hellsing has vampires and their unique abilities. Fanfictions often explore how these powers interact.
One common theme is the clash of different power systems. In Hellsing, there are vampires and powerful anti - vampire weapons, while in RWBY, there are the Huntsmen and their unique abilities. Fanfictions often explore how these power systems interact when the two universes collide.
Sir Integra from Hellsing could interact with the higher - ups in the devil society of Highschool DxD. They would likely have diplomatic meetings to discuss how to deal with threats that cross over between their two worlds. Integra would be firm and no - nonsense, which could either earn her respect or cause some friction with the devils who are used to a more complex power - play based society.
One idea could be that the characters from Highschool DxD end up in the Hellsing universe. Maybe Issei and his friends are mistaken for new types of vampires due to their devil powers. They then have to team up with the Hellsing organization to clear their names and also fight against a common enemy that is threatening both the devil and human worlds in this combined universe.
The exploration of morality is also a big theme. When Hellsing crosses with a more 'pure - hearted' universe like 'My Little Pony' (in some very creative crossovers), it forces the characters to re - evaluate their views on good and evil. Alucard's brutal nature might seem out of place in the colorful world of ponies, and this contrast creates interesting moral discussions.