Well, one big challenge is getting the lore right. Warhammer has a ton of detailed lore, and Young Justice also has its own established universe. Combining them without messing up the facts is tough.
Sure. A lot of these crossovers play around with the different power levels and moralities. For example, a story could involve a Warhammer chaos warrior somehow ending up in the Young Justice world and causing chaos (no pun intended). It's all about how the authors blend the two very different universes together in an interesting way.
Character development is key. If you're bringing in characters from different franchises, make sure they stay true to their original selves while also growing in the new environment. For instance, if Captain Kirk enters the 40k universe, he would be shocked by the brutality but also use his wits to survive. You also need to think about how the different powers and abilities will interact. In a crossover with Harry Potter, how would a Space Marine react to magic? There are so many possibilities to explore.
One great 'Warhammer 40000 Crossover Fanfiction' is the one where it crosses with Star Wars. It's really interesting to see the Imperial Guard facing off against Stormtroopers. The different combat styles and ideologies make for a great read.
Well, Superman's strength and invulnerability would be a great match against the brute force of some of the larger Warhammer creatures like Ogres or even some of the daemons. His heat vision could also be a useful weapon against hordes of enemies. Batman's strategic mind would be invaluable in dealing with the complex politics and power struggles in the Warhammer universe. He could also use his gadgets to adapt to the different technologies and magics there. Wonder Woman's combat skills and her Lasso of Truth could be used to great effect in dealing with the more devious characters in Warhammer, like the Dark Elves.
One exciting plot twist could be that the Chaos forces from Warhammer somehow corrupt a member of the Justice League. Imagine Superman, under the influence of Chaos, turning against his comrades. It would create a huge internal conflict within the League as they struggle to save him without harming him. Another could be that the technology or magic from Warhammer is introduced to the DC Universe in a way that changes the power dynamics. For example, the Warp magic could give new abilities to some of the villains, forcing the Justice League to adapt quickly.
Yes, there are quite a few out there. You can start by looking on fanfiction platforms like Archive of Our Own. Some of these crossovers blend the magic system of Harry Potter with the dark and gritty universe of Warhammer in really interesting ways, like having Hogwarts students interact with Warhammer characters.
One great 'Warhammer 40k Emperor Crossover Fanfiction' is the one where the Emperor crosses over into a modern Earth setting. It shows how his powerful psychic abilities and leadership skills shock the modern world.
One possibility in this fanfiction could be that the female Harry Potter brings her magical skills into the Warhammer universe. Maybe she uses her magic to combat the dark forces in the Warhammer world, like the Chaos legions. Her knowledge of spells and potions could give her an edge in battles and interactions with the various races in that universe.
Common themes include the struggle for survival. Given that both universes have their own sets of threats, when combined in a crossover, the characters often find themselves in situations where they have to fight for their lives in new and unexpected ways. Another theme is the exploration of different moralities. The somewhat black - and - white morality of Harry Potter (good guys vs bad guys) meets the more complex and often grey moralities in Warhammer. This can lead to some interesting character development as characters from both sides question their own beliefs and values.