A Harry Potter and Call of Duty crossover fanfiction might have the Hogwarts students being teleported into a Call of Duty battlefield. They would have to adapt their magic skills to the new environment. The Death Eaters could team up with the bad guys in Call of Duty. Wizards could use apparition to quickly move around the map, which would give a whole new dynamic to the typical Call of Duty gameplay.
Definitely Harry Potter himself. He's the hero in the Harry Potter series, so he would be a central figure in the crossover. He could use his skills and courage to lead the way in the new, combined world. Ron and Hermione would also be important, as they are Harry's closest friends and would support him throughout the adventure.
One possible plot could be that Naruto and his friends are suddenly transported into the Call of Duty universe. They have to adapt to the modern warfare settings, with Naruto's ninja skills giving him an edge in close - quarters combat. They could team up with some of the Call of Duty characters to fight against a common enemy, like a rogue group that has stolen some powerful jutsu and is using it in the war - torn landscapes of the Call of Duty world.
It could be a really wild concept. Imagine Ash in the world of Call of Duty, using his Pokémon skills to outwit opponents. His Pikachu might zap enemies' weapons or disrupt their communications. It would be a mix of the cute Pokémon universe and the intense, military - style world of Call of Duty.
In a Harry Potter - Moana crossover fanfiction, the magical creatures in the Harry Potter world could interact with the spirits in Moana's world. For instance, a Hippogriff could fly over Moana's island and be seen as a strange new creature. Or the Maui's fishhook could have some sort of magical connection with a powerful wand in the Harry Potter universe. The characters' personalities would also make for great combinations. Hermione's intelligence and Moana's determination could lead them to solve some big mystery together that involves both their worlds.
It could be really interesting. Maybe Harry Potter uses his magic to help Moana on her journey. For example, he could use a spell to calm the rough seas she sometimes faces. Or Hermione could use her vast knowledge to figure out some of the mysteries in Moana's world that even she doesn't understand yet.
Well, it could be about Harry Potter and his friends visiting a magical barbershop in Diagon Alley. The barbershop might be run by a wizard who uses magic scissors that can give different haircuts depending on the mood of the customer. For example, if a person is feeling adventurous, the scissors could give a wild and spiky haircut.
One interesting crossover could be the use of spells in the Call of Duty Zombies setting. For example, a wizard character from Harry Potter might use the 'Stupefy' spell to stun zombies instead of using a regular weapon. Another could be the Hogwarts castle being overrun by zombies, and the students and teachers having to fight them off using a combination of magic and the survival skills from Call of Duty. It could also be cool to see the Death Eaters team up with the zombies for some sort of dark alliance.
One idea could be Harry Potter characters being transported into the Call of Duty universe and having to use their magic in the middle of a modern warfare scenario. For example, Hermione might use spells to hack into enemy communication systems.
A possible crossover could involve the magic system of Harry Potter being combined with the Gem technology in Steven Universe. For example, Hermione could study how the Gems' powers work and try to find a scientific explanation for it. On the other hand, Pearl could be fascinated by the complex spells in the wizarding world. And perhaps Dumbledore and Garnet could have a deep conversation about leadership and protecting their respective worlds.
A Naruto and Harry Potter crossover with the Sharingan involved would bring a whole new dynamic. The Sharingan's powers of perception and the ability to copy techniques could be adapted in the magical realm. The fanfiction could explore how a ninja's training and skills would fare against the magic of the wizarding world. There could be a lot of cultural clashes as well. The ninjas' values and ways of life are quite different from those in the wizarding world, and this could lead to some really engaging story arcs where they learn from each other and grow.