One idea could be to have the Spartans from Halo end up in the RWBY universe. They could team up with the RWBY characters to fight against a common enemy like the Grimm. Maybe the Spartans' advanced technology would be a big advantage in battles.
One idea could be to have the RWBY characters team up with Halo Spartans to fight a common enemy. For example, a new type of Grimm that has been enhanced by Covenant technology. The different fighting styles of the RWBY characters, like Ruby's scythe - wielding and Halo Spartans' high - tech combat maneuvers, would create some really cool action scenes.
Mixing the lore of both universes in a creative way. Like, if the Halo rings had an impact on the creation of the different Kingdoms in RWBY. This would not only blend the two stories but also give a fresh take on the existing RWBY lore.
Ruby Rose would be really interesting. Her speed and scythe - wielding skills could be a unique addition to the Halo battles. Plus, her positive attitude might inspire the Halo characters.
Ruby and Master Chief could be a great pairing. Ruby's enthusiasm and quick - thinking could complement Master Chief's stoic and strategic nature. They could learn from each other's combat styles and leadership skills during battles against the combined threats of Grimm and Covenant.
In this type of fanfiction, the concept of mixing the grittier, more militaristic feel of Halo with RWBY's more fantastical elements is really engaging. We could see UNSC soldiers trying to adapt to the Grimm - filled world of Remnant. And perhaps the characters from RWBY learning about the Forerunners and their technology. It could open up a world of possibilities for epic battles, new friendships, and the exploration of different values and ethics from both universes.
Perhaps a crossover where Master Chief and Ruby Rose meet. They could exchange their combat experiences. Ruby could be amazed by Master Chief's Spartan enhancements and weaponry, while Master Chief might be intrigued by Ruby's Silver - eyed power. They could then go on a mission together, with Ruby's speed and scythe - wielding skills complementing Master Chief's brute force and strategic thinking.
The combination of different power systems. RWBY has its unique semblances and Dust - based powers, while Halo has advanced weaponry and the Spartans' enhanced abilities. When these are combined in a crossover, it creates really exciting battle scenes. For example, seeing Yang use her semblance to enhance her punches while also wielding a Halo energy sword is really cool.
Master Chief and Ruby could be an interesting pairing. Master Chief's stoic and experienced nature could contrast with Ruby's more youthful and enthusiastic personality. They could learn a lot from each other in combat situations.
There's also 'RWBY and Halo: A Crossover of Worlds'. In this fanfiction, the Forerunners from Halo are somehow connected to the Dust in RWBY. It's really interesting how the author weaves together the two different mythologies. It has some great character interactions, like Ruby meeting Master Chief and their initial confusion and then mutual respect.