In My Hero Academia x Overlord fanfiction, a great crossover idea could be the heroes from My Hero Academia being transported to the world of Overlord. They would have to deal with the politics and power struggles there. The students from UA might be shocked at the more brutal nature of the Overlord world compared to their own, and they would have to adapt quickly to survive.
One interesting crossover could be Deku meeting Spider - Man. They both have a strong sense of justice and the will to protect the weak. Deku could learn some new web - slinging moves from Spider - Man, while Spider - Man could be inspired by Deku's unwavering determination in the face of danger. Another cool crossover might be All Might teaming up with Captain America. They are both symbols of hope and strength in their respective universes. Their combined leadership and power would be a force to be reckoned with against any common enemy.
In Naruto x My Hero Academia fanfiction, a cool concept is when the Naruto characters are inserted into the My Hero Academia world. Like Naruto being enrolled in UA. He would surely cause a stir with his energetic and head - strong personality. His Rasengan could be seen as a very unique 'Quirk' in that world. And Hinata could be in the same class as Ochaco, and they could become friends while learning different fighting styles from each other.
One interesting crossover could be the Doom Slayer arriving in the My Hero Academia world. He could be seen as a sort of anti - hero with his extreme combat skills. His presence might disrupt the hero - villain balance as he has his own way of dealing with threats. He might not care much about the laws and regulations of the MHA world, but his actions could inspire some of the heroes to be more aggressive in their fight against evil.
One interesting crossover could be the characters swapping their powers. For example, Deku getting Naruto's chakra and being able to use jutsus like the Rasengan. It would be cool to see how he'd adapt to that new power source and how it would change his fighting style in the My Hero Academia world.
One interesting crossover could be Peter Parker (Spider Man) attending U.A. High. He'd likely be an instant hit with his web - slinging skills. His sense of humor would also mesh well with the likes of Denki Kaminari. Another could be a team - up between Spider Man and Midoriya. Midoriya could learn a lot from Spider Man's experience in handling his powers.
One interesting crossover could be the characters swapping their powers or abilities. For example, Luffy with One for All. It would be fascinating to see how he'd use it with his rubber body. Another could be the heroes from My Hero Academia joining the Straw Hat crew on an adventure. They'd bring their unique quirks to the pirate world and help in battles against the likes of the Marines or other pirates.
One interesting crossover could be Denji from Chainsaw Man ending up in the world of My Hero Academia. He might initially be confused by the concept of Quirks and heroes. But his tenacity and unique abilities could make him an out - of - the - box hero. He could team up with Midoriya, for example. Midoriya would be intrigued by Denji's chainsaw powers and they could learn from each other's fighting styles.
In some fanfictions, the Pokemon world and the My Hero Academia world might merge. This could lead to situations where the heroes have to deal with Pokemon villains. Like a villain using a powerful and evil - natured Pokemon to cause chaos in the city, and the heroes would have to use their Quirks and their newfound knowledge of Pokemon to stop them.
A really fascinating crossover might be where Ben's Omnitrix gets into the hands of a character from My Hero Academia, like Midoriya. Imagine him trying to figure out how to use all the different alien forms and how it would affect his hero training. Or perhaps having Vilgax team up with the League of Villains to take over both universes. This would create a really intense and action - packed story.
In some fanfictions, the characters could swap universes. So, Harry Potter characters end up in the My Hero Academia world and vice versa. The students at Hogwarts might be really confused by the concept of quirks, while the heroes in My Hero Academia would be fascinated by magic. It would be a great opportunity to explore how different characters adapt to new and strange environments.