It would probably be Sasuke. His Sharingan gives him so many abilities like enhanced perception, the ability to copy moves, and eventually the Mangekyo Sharingan powers. In the My Hero Academia world, these skills would be extremely powerful. He could easily outwit and overpower most of the heroes and villains there.
I think Naruto could also be a strong contender. His Sharingan, combined with his Nine - Tails chakra, would make him a force to be reckoned with. He has a lot of combat experience from the Naruto world. In the My Hero Academia setting, he could use his Sharingan to analyze his opponents' quirks quickly and then use his chakra - enhanced strength and speed to take them down.
It's hard to say for sure, but Naruto would be a top contender. His ability to use the Nine - Tails' power, along with his Sage Mode and Rasengan techniques, make him extremely formidable. Plus, his experience in battles and his never - give - up attitude would give him an edge. However, All Might with his One For All at full power is also incredibly strong. His physical strength and combat experience in the My Hero Academia world are second to none.
It's hard to say for sure. Naruto in his final form with all his chakra and Sage Mode abilities is extremely powerful. He could potentially overpower many of the My Hero Academia characters. But All Might at his peak was also incredibly strong. His punches could cause massive destruction. However, if we consider characters like Kaguya from Naruto, with her god - like powers, she would likely be one of the most powerful in a crossover. She has abilities like creating dimensions and is almost unbeatable in the Naruto universe.
It's hard to say for sure. But All Might from My Hero Academia has incredible strength and speed. However, in the world of Black Clover, the Wizard King has a vast amount of magic power. If they were to face off, All Might's physical power might be countered by the Wizard King's magical abilities. But if All Might could get in close enough, his punches could be devastating.
Doctor Strange with a Quirk like Eri's Rewind. He could not only manipulate time and space with his magic but also use the Rewind Quirk to reverse damage or even reverse the actions of enemies. This combination would make him a very versatile and powerful character, able to heal allies and counterattack enemies in ways that would be very difficult to defend against.
In a fanfiction setting, Bakugo might be the most powerful. His explosive quirk is already very destructive. At Hogwarts, he could learn some offensive magic spells and combine them with his quirk for some really powerful attacks. He's also highly competitive and would strive to be the best, which would drive him to master both his quirk and magic faster than others.
Well, it could also be All Might. His One For All Quirk gives him an insane amount of power. In a crossover, if he were to combine his brute strength with some of the techniques from Devil May Cry, like Dante's acrobatic dodging, he could be extremely formidable. He has the willpower and the experience of being a top hero. His ability to change the weather with his punches is something that even characters from Devil May Cry would have to be cautious of.
It's hard to say for sure. Ryu has his powerful Hadoken and Shoryuken techniques. But in the My Hero Academia world, characters like All For One have extremely powerful quirks. He can steal and use other people's quirks, which gives him a huge advantage. However, if we consider the raw power and training of Ryu, he could also give All For One a tough fight.
It could be Naruto. His godlike form in Naruto already gives him incredible power. If he were to gain quirks on top of that, he would be extremely formidable. His ability to create thousands of clones and his vast chakra reserves combined with a powerful quirk would make him a top - tier character.
It would probably be Naruto if he's in his godlike state. With his vast chakra reserves and powerful jutsus, he could overpower most characters in the My Hero Academia world. His ability to create countless shadow clones and use techniques like the Rasengan or even more advanced forms would make him a formidable force.
I think Bakugo and Rock Lee would make for a fascinating pairing. Bakugo is loud and brash, while Rock Lee is extremely dedicated. Rock Lee could show Bakugo the value of hard work without relying on a natural - born power (since Bakugo is very proud of his quirk). In return, Bakugo could teach Rock Lee some new combat tactics. Also, Hinata and Uraraka would be a cute pairing. Hinata's shy but strong nature and Uraraka's bubbly personality could create some really interesting interactions, and they could also learn from each other's combat abilities in their respective worlds.