A popular MHA crossover fanfic is 'MHA and Harry Potter: Hogwarts Heroes'. It imagines the MHA students attending Hogwarts. The fanfic is filled with cool moments like seeing Bakugo try to out - do the Gryffindors in their own house. It also has some great magical - quirk combinations. 'MHA x Fullmetal Alchemist: Alchemical Heroes' is also quite good. It mixes the alchemical world of FMA with the hero - filled world of MHA, creating new storylines and character developments as the MHA characters interact with the Elric brothers.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Use the search function and type in 'MHA crossover' and then sort by the most popular or highest rated stories. Another way is to join MHA - related fan communities on platforms like Reddit or Discord. There, you can ask other fans for their recommendations of the best MHA crossover fanfictions.
One great RWBY crossover fanfiction is 'RWBY x Naruto: The Shinobi Huntresses'. It combines the unique powers and characters from RWBY with the ninja world of Naruto in an exciting way. The story has well - written fight scenes and interesting character interactions.
Another good one is 'Sasuke Meets the Avengers'. In this fanfiction, Sasuke is transported to the Marvel universe. His brooding nature and powerful combat skills make for some intense interactions with the Avengers. He has some epic battles with villains like Loki, using his ninjutsu in unexpected ways against super - powered foes.
Another top - notch DxD crossover is 'DxD and Bleach: Soul Society's Intervention'. In this one, the Soul Reapers from Bleach get involved in the DxD universe. The author does a great job of making the crossovers believable. They have to deal with the political intrigue in both worlds and there are some really cool team - up moments between characters from DxD and Bleach.
One great Ranma crossover fanfiction is 'Ranma in the Harry Potter World'. It combines the chaotic world of Ranma with the magic of Harry Potter in an interesting way. The characters from Ranma adapt to the Hogwarts setting, and there are lots of humorous situations as they interact with the wizards and witches.
A popular one is the 'MLP and Star Wars' crossover. It has ponies in the Star Wars universe. For example, the ponies might be Jedi or Sith, with their own unique take on the Force. It's exciting to see how the two very different universes blend together, with epic space battles and pony - themed lightsaber duels.
A really interesting one is 'Avengers Crossover: Harry Potter's Magic in the MCU'. This fanfic brings the magical world of Harry Potter into the Avengers' universe. It has some unique plot twists where the Avengers have to deal with magical threats and learn about a whole new kind of power. It's a fresh take on the crossover concept.
There's also 'Superman and Captain Marvel: Worlds United'. In this fanfiction, the two super - powered beings from different universes come together. It explores their different powers, ideologies, and how they can learn from each other while fighting off a powerful villain that threatens both their worlds.
One great Inuyasha crossover fanfiction is 'Inuyasha and the World of Harry Potter'. It combines the magical elements of the Harry Potter universe with the feudal Japan setting of Inuyasha. The characters from both worlds interact in really interesting ways, like Inuyasha trying to understand magic wands. Another one is 'Inuyasha meets Naruto'. It pits the demon - slaying powers of Inuyasha against the ninja skills of Naruto characters. It's exciting to see how they would battle or team up. There's also 'Inuyasha in the Lord of the Rings' where Inuyasha's journey through Middle - earth brings a whole new dynamic to the story.
A popular one is 'Naruto x One Piece Crossover'. In this fanfic, Naruto somehow ends up in the One Piece world. His ninja abilities make for some interesting interactions with the pirates and devil fruit users. There's also 'Naruto in the Bleach Universe'. Here, Naruto's journey takes him to the Soul Society, and he has to adapt to the different power systems and make new allies and enemies.