Well, a really cool Jafar crossover fanfiction could involve him crossing over with the world of Alice in Wonderland. Jafar would be this menacing figure in Wonderland, using his wiles to try and gain control. Or perhaps a crossover with the world of The Little Mermaid. He could try to make a deal with Ursula to rule both the underwater world and Agrabah. Also, a crossover with a magical school like Hogwarts would be interesting. Jafar could try to infiltrate the school to steal magic secrets.
Some great Jafar crossover fanfiction concepts include a crossover with Snow White. Jafar might see the magic mirror in Snow White's world as a powerful tool and try to get his hands on it. Another concept is a crossover with the Jungle Book. He could try to use his magic to rule over the jungle animals. And then there's the idea of a crossover with the Beauty and the Beast world. Jafar might be intrigued by the enchanted castle and the magic within it and attempt to take it over for his own gain.
One idea could be a Jafar crossover with Aladdin in a modern-day setting. Maybe Jafar uses his magic to adapt to the new world but still has his evil intentions. Another could be a crossover with a fairy - tale world like Cinderella's, where Jafar tries to take over that kingdom too. A third idea might be a crossover with a superhero universe, and Jafar attempts to outwit the heroes using his sorcery.
One idea could be a story where Jafar has a change of heart and tries to redeem himself in Jasmine's eyes. Maybe he starts secretly helping the poor in Agrabah, and Jasmine gradually notices his good deeds and begins to question her long - held negative view of him.
One idea could be that Jasmine manages to outwit Jafar in a different way than in the original story. Instead of relying on Aladdin, she uses her own wits and charm to turn Jafar's schemes against him. Maybe she pretends to be interested in his power - play along with his ideas just enough to get close and then expose his true nature to the whole kingdom.
One interesting idea could be a crossover with "Moana". Elsa's ice powers and Moana's connection to the ocean could create a really cool dynamic. Maybe Elsa accidentally freezes part of Moana's ocean and they have to work together to fix it. Another could be with "Tangled". Rapunzel's long hair and her adventurous spirit combined with Elsa and Anna's journey in Frozen 2 would be exciting. Rapunzel could use her hair to help them climb mountains or cross chasms. A third idea is a crossover with "Beauty and the Beast". Belle's love for books and knowledge could help Elsa understand more about her powers and the history of magic in the Frozen world.
A Rambo crossover fanfiction could involve him crossing over into the Star Wars universe. Rambo's guerilla warfare tactics could be interesting in a galaxy far, far away. Maybe he helps the Rebel Alliance in a ground - based battle against the Empire. Or a crossover with the Predator series. Rambo would be a worthy opponent for the Predator, and the fight between them in the jungle could be epic. Also, a Rambo and John Wick crossover would be intense, two highly skilled fighters on the same side or perhaps initially at odds.
One idea could be a crossover with a modern military setting. The Decepticons could be trying to steal advanced military technology. Another is a crossover with a post - apocalyptic world where they are competing with other factions for resources. A third could be a crossover with a magical realm, with the Decepticons trying to harness the magic for their own evil purposes.
One idea could be a crossover with Naruto. Kakuzu could be sent to the Naruto universe and form an unlikely alliance with a shinobi village to fight a common enemy, like the Akatsuki from his own world turned rogue in the new universe. This would create a lot of interesting character dynamics and battles.
Another option is a crossover with 'The Little Mermaid'. The characters from the descendants could meet Ariel and her friends underwater. Evie might be interested in the mermaid fashion and could design new outfits inspired by the underwater world.
Another possibility is a crossover with the world of Naruto. The characters from MHA could participate in the Chunin Exams. Bakugo might be really into showing off his skills in this new and different kind of competition.
One idea could be a Venom crossover with Spider - Man in an alternate universe where they have to team up against a common enemy like Carnage. Another could be a Venom and Deadpool crossover, with their crazy personalities clashing and then somehow working together. Maybe a Venom crossover with the X - Men, where Venom's alien nature causes some interesting reactions among the mutants.
For a Monokuma crossover fanfiction, consider a crossover with 'Final Fantasy'. Monokuma could be a summoned monster by an evil villain in the game's world, causing all sorts of problems for the heroes. He might even try to take over the crystals. A crossover with 'Persona' could also be interesting. Monokuma could enter the Metaverse and start his own 'Palace', recruiting Shadows to enforce his rules. And how about a crossover with 'One Piece'? Monokuma could be a new Warlord of the Sea, using his wacky yet dangerous devices on the Straw Hat Pirates and their allies.