Another option is a crossover with the Lord of the Rings. The Jedi could find themselves in Middle - earth and assist the Fellowship in their quest. They could use their combat skills and Force - related abilities to fight against Sauron's forces, like the orcs and Nazgûl. This would bring a new dynamic to the classic LOTR story.
One idea could be a crossover with the Star Wars Rebels universe. Cal Kestis could team up with Ezra Bridger. They could combine their unique Force abilities and lightsaber skills to take on a new threat that's endangering both their storylines. Maybe a powerful Sith Lord who has found a way to manipulate time and space.
To write an engaging Jedi Knight Marvel crossover fanfic plot, start by identifying key elements from both universes. For example, consider how the Force from the Jedi Knight world would interact with the superpowers in Marvel. You could have a Jedi character encounter the Avengers and face a common enemy. Maybe the Sith are teaming up with a Marvel villain like Thanos. Then, create a conflict that forces the characters from both universes to work together. This could be a threat to the multiverse itself. Build character relationships, like a Jedi mentoring a young superhero in the ways of the Force.
Another plot could involve a group of Jedi who try to stay neutral during the civil war. They could form their own enclave and try to protect civilians caught in the crossfire. They'd face challenges from both warring sides who might see them as a threat or an opportunity.
One idea could be a story where a new student arrives at Cross Academy who has a unique power that disrupts the balance between the vampires and the humans. This new character could be a hybrid of some sort, and their presence forces the main characters like Yuki and Zero to re - evaluate their beliefs and relationships.
Perhaps the Magic Knights are called to a different realm because there are dark forces there that are somehow related to the enemies they fought in their own world. They meet characters from that world who have unique powers. The Magic Knights then have to combine their powers with these new characters to stop the spread of the darkness. They might face challenges like cultural differences and different ways of using magic.
One idea could be that Naruto is somehow transported to the Vampire Knight world. He might initially be seen as a threat due to his unknown powers. But then he could start to form alliances with some of the vampires or the Day Class students. For example, he could team up with Zero to fight against the more evil vampires who want to harm the humans at the school. His ninja skills would be a new and exciting addition to the Vampire Knight universe.
One idea could be that Ichigo from Bleach gets transported to the Vampire Knight world. He might initially be mistaken for a threat by the vampires. But as he learns about their society, he could use his Soul Reaper powers to help protect the humans from rogue vampires. He might also form an unexpected alliance with a vampire, like Zero, who shares his sense of justice.
One idea could be to cross it with a magical girl anime. The failed knight could learn some new magical techniques from the magical girls. For example, they might learn how to use their mana in a more efficient and colorful way, like the magical girls do with their magic.
In a crossover with the Avengers, characters like Iron Man and Captain America would be great. Iron Man could be intrigued by the technology of the lightsabers and try to replicate it. Captain America, on the other hand, could admire the Jedi's code of honor and fight alongside them against a common enemy, perhaps Thanos who is also after some powerful Force - like artifacts.
Another option is a crossover with the Pokémon world. The Phantom Thieves could travel to a region in the Pokémon world and discover that someone is using Persona powers to make Pokémon act out of control. They would need to catch Pokémon themselves and use their combined powers of Personas and Pokémon to stop the bad guy. It would be interesting to see how they interact with Pokémon trainers and the whole Pokémon ecosystem.