In Halo Warhammer 40k crossover fanfiction, the Librarians from Warhammer 40k are quite popular. Their psychic powers can lead to some really cool interactions with Halo's technology and characters. They can sense things in the Warp, and how would that work when dealing with the more scientific Halo universe? Cortana from Halo is also a favorite. Her artificial intelligence is something that doesn't really exist in the same way in Warhammer 40k. So seeing her interact with the various tech - priests or even daemon - possessed entities could be really interesting. Additionally, Chaos Space Marines are often used for their menacing and unpredictable nature in crossovers.
One of the most popular characters to feature is Guilliman from Warhammer 40k. He is a powerful and strategic leader, and seeing him interact with the UNSC leadership in Halo would be great. He could bring his knowledge of warfare and his Ultramarines' discipline to the table. On the Halo side, the Elites are also popular. Their honor - based culture could clash or find common ground with the different cultures in Warhammer 40k. For example, they could form an uneasy alliance with some of the more noble factions in Warhammer 40k against a common threat, like the Tyranids or the Flood.
The Space Marines are often popular. Their super - human abilities and cool armor make them great for crossovers. They can be paired with characters from other universes and show off their combat prowess. Another popular character is Abaddon the Despoiler. His menacing presence and leadership in the Chaos forces can create some intense crossover storylines.
The Space Marines from Warhammer 40k are often popular. Their super - human strength and combat skills would make for an interesting match against the various alien species in Mass Effect. Commander Shepard from Mass Effect is also a common choice. His/her leadership and combat abilities could be a great addition to the often dark and gritty Warhammer 40k universe.
Chief Master Sergeant John - 117 from Halo is often a popular character in these crossovers. His super - soldier abilities and leadership make him a natural fit in the chaotic and dangerous Warhammer 40k universe.
Master Chief is definitely one of the most popular. He's the face of the Halo series, so fans love to see him in crossovers. Cortana is also a popular choice. Her complex character and her relationship with Master Chief make for interesting crossovers. The Arbiter is another character that often features. His unique backstory and his role in the Halo universe can add a lot to a crossover story.
Ruby Rose is often a popular crossover character. Her combat skills and leadership in RWBY make her a natural fit to be inserted into the Warhammer 40K universe. She could potentially lead a squad of Space Marines or be a key figure in a resistance against some of the darker forces. Another popular one is Yang Xiao Long. Her strength and brawler - like combat style can be really interesting when pitted against the various foes in 40K.
It could be the Emperor of Mankind from Warhammer 40k. His psychic powers are off the charts and his influence over the entire Imperium is vast. He could easily manipulate the situation in a crossover. However, Master Chief from Halo also has his own set of skills and experience that make him a formidable opponent.
Archaon is often a popular choice. His dark and powerful presence can add a lot of drama to a crossover story. He could be pitted against heroes from other factions in unexpected scenarios.
Sigmar is a great choice. His heroic and god - like status in Warhammer Fantasy could make for interesting interactions in a crossover. Another is Malekith. His dark and complex nature would add depth to crossovers, especially with darker - themed universes. Then there's Teclis, the high elf mage. His powerful magic could be a key element when crossing over with other magic - heavy worlds.
The Silent King Szarekh is also very popular. He represents the ancient and mysterious nature of the Necrons. Fanfiction might delve into his past, his reasons for leading the Necrons, and his long - term plans for the galaxy.
The Space Marines are often very popular. Their noble and fearless nature makes them appealing protagonists. They are highly trained warriors with advanced technology at their disposal, and in the fanfiction, they can be portrayed in various ways, from following strict codes to breaking them for the greater good.