Some fanfictions might explore the idea of a Mortal Kombat tournament taking place at Hogwarts. The various Mortal Kombat characters would bring their own brand of combat, while the Hogwarts environment would add a magical twist. The students could either be spectators or get involved in some way. This would mix the high - stakes, often gory combat of Mortal Kombat with the more whimsical and magical world of Harry Potter.
How about a story where a spell goes wrong in Hogwarts and transports the entire school to the Mortal Kombat realm? The students are then faced with the challenges of survival in this new, dangerous world. They form alliances with some of the Mortal Kombat characters who are initially suspicious of them but then realize they can be useful allies. The story could focus on how the students adapt their magic to the Mortal Kombat environment and how they change as they learn the ways of this new world.
One interesting crossover could be Shao Kahn's invasion of the Naruto world. Picture Shao Kahn's Outworld forces clashing with the ninja villages. Naruto and his friends would have to use their unique jutsu against Shao Kahn's powerful magic and brute strength. Maybe Naruto's Rasengan could be a counter to some of Shao Kahn's energy attacks.
One interesting aspect could be the magic systems. In fanfiction, they might combine the rune magic from Mortal Instruments with the spellcasting in Harry Potter. For example, a character might use a rune to enhance a spell. Another idea could be the characters' interactions. Shadowhunters and Hogwarts students could team up to fight a common enemy, like a dark wizard who also has ties to the demon world in Mortal Instruments. It would be really cool to see how different magical cultures collide and cooperate in these fanfictions.
Some popular crossovers include ones where the villains from both universes team up. Imagine Makarov from Fairy Tail having to face off against Shao Kahn and his new allies from Fairy Tail. There are also crossovers that play on the comical side. Like when the talking cats from Fairy Tail meet the strange creatures in Mortal Kombat. And then there are crossovers that are more about exploring the different cultures. For instance, how the honor - based system in Mortal Kombat compares to the guild - based loyalty in Fairy Tail.
One great storyline could be a Mortal Kombat 11 and Resident Evil crossover. Imagine the Mortal Kombat warriors having to fight through a zombie - infested Outworld. They would have to use their combat skills not only against the undead but also against any Resident Evil villains that might be lurking. Another interesting one is a crossover with Star Wars. The Jedi and Sith powers would be a fascinating contrast to the Mortal Kombat magic and combat. For example, a lightsaber duel between a Mortal Kombat character and a Jedi Knight.
One interesting crossover could be Ben using his alien forms to help the students at Hogwarts during a dark wizard attack. For example, his Heatblast form could be useful against ice spells. Another could be Harry Potter using magic to enhance Ben's Omnitrix. Maybe a spell that makes it transform faster or unlock new alien forms.
One interesting crossover could be the use of magic from Harry Potter in the RWBY universe. For example, a character from RWBY might learn how to use spells like Wingardium Leviosa to help in combat or daily tasks. Another could be the Hogwarts houses being applied to RWBY characters, with Ruby perhaps being a Gryffindor due to her bravery.
In some Harry Potter and Riverdale fanfiction, the houses in Hogwarts could be compared to the social groups in Riverdale. For example, Gryffindor's bravery could be related to how the Bulldogs in Riverdale stand up for what they believe in. Slytherin's cunning might be similar to how some of the more devious characters in Riverdale operate. And then there could be a plot where characters from Riverdale are sorted into Hogwarts houses and have to adapt to the new environment based on the traits of their houses.
In Harry Potter and Clannad fanfiction, a great crossover idea is the exchange of character traits. Maybe some of the Clannad characters could be sorted into Hogwarts houses based on their personalities. And vice versa, the Hogwarts students could learn about the strong family and friendship bonds in Clannad. It could also involve a plot where a powerful Clannad character has to deal with the dark magic threats in the Harry Potter universe. This would create a whole new set of challenges and adventures for both sets of characters.
One interesting crossover could be the use of magic systems. For example, how would the Shadowhunter runes interact with Harry Potter's spells? Maybe a character from the Shadowhunter world could find themselves at Hogwarts and be both amazed and confused by the different forms of magic. Another aspect could be the characters' personalities clashing or working together. A brave Gryffindor and a fearless Shadowhunter might team up to fight a common evil that threatens both their worlds.