Definitely Midoriya and Spider - Man. They are both young heroes with a strong sense of justice. Midoriya is constantly learning to control his powerful quirk, and Spider - Man has to deal with the great responsibility that comes with his powers. They could learn a lot from each other about being a hero and handling difficult situations.
One interesting pairing could be Izuku Midoriya and Captain America. Izuku is all about the spirit of never giving up and has a strong sense of justice, much like Captain America. Cap could teach Izuku some hand - to - hand combat skills and Izuku could show Cap the potential of quirks. Another cool pairing would be Bakugo and Iron Man. Both are brash and confident in their abilities. Iron Man could help Bakugo upgrade his gauntlets with some Stark tech while Bakugo's explosive personality might give Iron Man some new ideas for his suits.
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.
One interesting pairing could be All Might and Captain America. They both represent the ideals of heroism in their respective universes. All Might, with his One For All power, and Captain America, with his super - soldier serum - enhanced abilities, could have great discussions about the responsibilities that come with their powers. They could also train together, sharing their unique combat techniques.
I think Uraraka and Green Lantern would be a cool pairing. Uraraka's quirk allows her to manipulate gravity, and Green Lantern's power ring is based on willpower and can create constructs. They could combine their powers in really creative ways. Uraraka could make objects weightless for Green Lantern to use in his constructs more easily, and he could protect her while she focuses on using her quirk.
Definitely Bakugo Katsuki and Renji Abarai. They're both hot - headed characters. Bakugo's explosive Quirk and Renji's powerful sword skills could lead to some intense battles and training sessions together. They might start off as rivals but eventually learn to respect each other. And then there's Todoroki Shoto and Toshiro Hitsugaya. They both have a sort of cold and controlled demeanor. They could compare their ice - based powers and learn new ways to use them, and also share their experiences of growing up with difficult family situations.
Tanjiro and Deku would be a very interesting pairing. Tanjiro has his strong sense of justice and his skills as a Demon Slayer, while Deku is determined to become the greatest hero. They could learn a lot from each other, like Tanjiro teaching Deku about perseverance in the face of great odds, and Deku showing Tanjiro how to better analyze an opponent's abilities.
Deku and Shepard would be an interesting pairing. Deku is a young hero - in - training with a lot to learn, and Shepard is an experienced leader. Shepard could mentor Deku, and Deku could show Shepard the power of having a quirk. Their different backgrounds and skills would make for great character development.
All Might and King would be an unexpected but interesting pairing. All Might is the symbol of peace in the MHA world, a paragon of heroism. King, who is known for being a false hero in One Punch Man (even though he has some hidden strengths), could have a really interesting dynamic with All Might. All Might might try to inspire King to be a true hero, while King could teach All Might some of his unique survival skills in a world full of powerful villains.
Definitely Naruto and Hulk. Just imagine Naruto trying to calm down the Hulk when he's angry. It would be hilarious. And on a more serious note, Naruto's positive energy might have an effect on the Hulk. Also, Sakura and Captain America. Sakura is a strong - willed and powerful female character, and Captain America is a symbol of leadership and justice. They could bond over their shared values and exchange fighting strategies.
Sam Winchester and Bruce Banner would be an amazing pairing. Sam is highly intelligent and well - read, and Bruce is a brilliant scientist. They could bond over their knowledge and maybe even find a way to control the Hulk better. Also, Natasha Romanoff and Charlie Bradbury would be a cool pair. They're both strong, independent women with a lot of skills. Natasha could teach Charlie some combat moves, and Charlie could introduce Natasha to some cool geeky stuff like LARPing.