Well, a simple way is to have a plot where the villains from both worlds team up. In this case, the Death Eaters and some of the powerful villains from My Hero Academia like All For One could form an alliance. The heroes from both universes would then have to come together to fight this combined threat. It would be interesting to see how the heroes with quirks interact with those who use magic to combat this new, powerful enemy. For instance, Bakugo might initially be dismissive of magic but then learn to respect it as he sees its power in battle.
One way is to have characters from My Hero Academia attend Hogwarts. For example, Izuku Midoriya could be a new student at Hogwarts, learning magic instead of using his Quirk. His determination and growth mindset would fit well in the magical world. He could make friends with Harry Potter and his gang, and they could learn from each other. Midoriya's strategic thinking from his hero training could help in battles against Voldemort's forces, while the wizards could teach him about magic spells that might be equivalent to his Quirks in some ways.
One way to blend the two universes in fanfiction could be through a magical accident. For example, a spell in the Harry Potter world could go wrong and open a portal to the God of War realm. This would allow characters from both to interact. Harry Potter characters might be shocked by the brutal and violent nature of the God of War world, while Kratos could be intrigued by the magic in the Potterverse.
Perhaps a spell gone wrong in the Harry Potter universe could open a portal to the Back to the Future universe. Hermione, being the brilliant witch she is, could team up with Marty McFly. They would have to learn about each other's worlds quickly. Hermione could teach Marty about magic, and Marty could show Hermione how to use the flux capacitor. Together, they could face challenges in both universes, like stopping Biff from taking over Hill Valley in the Back to the Future world and defeating Death Eaters in the Harry Potter world.
One way to blend the Mortal Kombat and Harry Potter universes in fanfiction could be through a magical portal. Imagine a portal opening between Hogwarts and the Mortal Kombat realm. Harry Potter characters could be drawn into the Mortal Kombat world and have to adapt to its brutal fighting style. They might use their magic in unique ways during the Kombat tournaments. For example, Hermione could use her vast knowledge of spells to create new combat spells inspired by Mortal Kombat moves.
One way to combine the My Hero Academia and Avengers universes in a fanfic could be through a dimension - hopping plot device. Maybe a character from My Hero Academia accidentally discovers a portal to the Avengers' universe. For example, Deku could find himself in New York City and meet Iron Man. Iron Man, being the genius he is, would be intrigued by Deku's Quirk and want to study it. This could lead to an exchange of ideas and technology between the two universes, like Deku learning about Stark technology and using it to enhance his hero suit in his own universe.
They can be blended by borrowing the concept of intelligence and strategy from Death Note. In My Hero Academia, many battles are physical, but if we incorporate the strategic thinking of Light Yagami from Death Note, it could add a new dimension. For instance, a character could plan out their moves against villains not just based on their quirks but also on out - thinking them like Light did. This could lead to more cerebral battles in the My Hero Academia universe. Also, the idea of a hidden identity, which was crucial in Death Note, could be introduced. A hero could have a secret identity that they use to fight crime in a different way, similar to how Light hid his identity as Kira.
In fanfiction, the combination might involve a device or spell that merges the two power systems. Maybe a Warhammer 40k tech - priest discovers a way to infuse the essence of quirks into their machinery. This could lead to the creation of weapons with quirk - like abilities, like a bolter that can shoot fireballs similar to a hero's quirk. It would completely change the dynamics of warfare in the Warhammer 40k universe.
To blend the two universes well, start with the settings. Incorporate elements from Hogwarts like the moving staircases and secret passages into Monster High. For characters, give the Monster High students some interest in wizarding magic. For example, Frankie Stein could be fascinated by the concept of transfiguration. And for the fem Harry Potter, let her be intrigued by the unique abilities of the monsters, like Clawdeen's sense of smell.
In Naruto in Overwatch fanfiction, the concept of elemental jutsu can be really interesting. Naruto's fire - style jutsu could be related to some of the fire - using heroes in Overwatch like Ashe. His water - style jutsu could be used in a creative way, like for defense or to put out fires in the Overwatch maps. And the idea of chakra could be something new to the Overwatch universe. It could be a power source that some characters start to tap into, leading to new abilities and power - ups.
Well, you could start with the colors. Godzilla is often associated with dark, earthy tones like gray and green. In My Little Pony, there are bright and pastel colors. You could have a scene where Godzilla is in the My Little Pony world and his presence creates a contrast, like a dark shadow against the colorful meadows. The ponies' cute and small structures could be compared to Godzilla's massive size, creating an interesting aesthetic blend.