A great crossover aspect could be the Precure's magic interacting with the Warhammer magic or technology. The Precure's spells could have unexpected effects when used in the Warhammer setting. Maybe their purification magic could be used to cleanse some of the corrupted areas or creatures. And they could also learn from the Warhammer characters, like how to better defend against certain types of attacks in this dangerous universe.
Well, think about it. The Precure are all about friendship, love, and protecting the world with a smile. In Warhammer, though, survival is often the main goal. But if you put them together, the Precure's personalities could start to break down the walls that the Warhammer characters have built up. For example, a Precure might befriend a Warhammer character who has always been alone, and show them the value of having someone to rely on. And the Warhammer character's more practical and battle - hardened nature could also teach the Precure about the harsher side of reality, making their own personalities more well - rounded.
Judy Hopps would likely adapt quickly. She's used to facing challenges in Zootopia, and in Warhammer, she'd just see it as a new set of problems to solve. Nick Wilde, on the other hand, might take a bit more time as he'd have to figure out who to trust. He'd probably start by using his charm to make connections.
A good Smile Precure fanfiction often has well - developed characters. Just like in the original series, the Precure girls should have distinct personalities. For example, if one is brave and another is more gentle, these traits should be clear in the fanfiction.
One common theme is self - discovery. The male Precure often has to figure out their powers and their place in the team. For example, in many stories, they start off not knowing they have these special abilities. Another theme is friendship. They form strong bonds with the other Precure members, just like in the original series but with a male perspective added.
One idea could be creating an OC who has the power of music in the Precure world. They could use melodies to heal and fight against the villains. Another is an OC from a different dimension who stumbles into the Precure universe and has to learn their ways to help. And also, an OC that is a hybrid of a magical creature and a human in the Precure world, bringing unique powers and a fresh perspective to the story.
In a Halo x Warhammer fanfiction, there could be a scenario where the Flood from Halo is unleashed in the Warhammer universe. This would be a huge disaster as the Flood has the ability to infect and assimilate almost any living being. The Imperium of Man in Warhammer would have to come up with new strategies to deal with this alien threat. Maybe they would try to use their psykers to combat the Flood's hive - mind. And the Halo UNSC forces might also get involved, bringing their own technology and tactics to the fight.
One interesting crossover could be the characters from Zootopia in the Warhammer universe. For example, Judy Hopps could be a scout in the Imperial Guard. Her natural agility and detective skills would make her a great asset. Another could be Nick Wilde using his wily ways to navigate the political intrigue of the Warhammer factions. He might be able to get information or make deals that others couldn't.
Another aspect of their character dynamics could be their competitiveness. They might compete in various Precure - related tasks, like who can defeat more villains or who can help more people. This friendly competition could add a layer of fun and excitement to the fanfic, while also strengthening their bond as they respect each other's abilities more and more.
The plot could involve their friendship evolving. Maybe Ira, who might initially be a bit of a troublemaker, starts to see the good in Rikka. They could go on adventures together in the Precure world, facing challenges side by side. Their relationship could grow from mutual respect to a deep, unbreakable bond.