First, you need to know the characters well from both DMC and the other franchise in the crossover. For example, if it's a DMC and Final Fantasy crossover, understand Dante's personality, his powers, and his backstory, as well as the characters from Final Fantasy like Cloud. Their different fighting styles and motives can create interesting conflicts and alliances.
Well, 'V Meets the Legend' is also quite interesting. It's a DMC 5 V crossover fanfiction where V encounters a legendary hero from another franchise. The two initially clash due to their different outlooks but then gradually come to respect and work with each other. The author does a wonderful job of writing their interactions and how V's demons react to this new presence.
First, you need to have a clear idea of the other universe or story you want to crossover with. For example, if it's a fantasy world, think about how V's powers and personality will interact with that world. Then, start with an interesting hook. Maybe V wakes up in this new world with no idea how he got there.
One idea could be a crossover between DMC and a fantasy series like Lord of the Rings. Dante could find himself in Middle - earth, facing off against orcs and demons alike. His swordsmanship and devil - may - care attitude would make for an interesting dynamic in that world.
Power and redemption are common themes. Vergil is often portrayed as seeking more power in crossovers, and sometimes this journey leads to a path of redemption. For example, when he meets characters from other universes who have different values, it can make him re - evaluate his own actions.
Power and self - discovery are also common themes. Vergil is a powerful character, and when he crosses over, he may have to re - evaluate his own power in relation to the new environment. He might also discover new aspects of himself in the process of interacting with new characters and situations. For example, in some fanfictions, he realizes that his pursuit of power might not be the only way forward after seeing different value systems in the crossover world.
There's a fanfiction called 'Female V: A New Beginning'. In this, it focuses on female V's journey of self - discovery. It starts with her trying to understand her new powers and then she gets involved in a mystery that has ties to the dark past of the DMC world. It's a really engaging read.
A powerful demon lord from the DMC world would be a great antagonist. This demon lord could see Toothless as a threat or a tool to use for his evil plans. He might try to corrupt Toothless or use his power to gain an edge over the DMC heroes.
Well, one possible plot could be Nero and Moka teaming up to fight a common enemy from their respective universes. Maybe they encounter a powerful demon in Nero's world that has some connection to the supernatural creatures in Moka's world. And they have to combine their powers and skills to defeat it.
Character exploration. In a crossover, Nero's character can be developed in new ways. He might have to face different moral dilemmas or challenges that force him to grow and change. It's like seeing a new side of him that was not fully explored in the main series.