One idea could be swapping the personalities of Deku and Bakugo. Deku could be bold and brash, while Bakugo might become more timid and self - doubting. It would create a whole new dynamic in their relationship and how they interact with other characters.
Another interesting swap could be between Todoroki and Uraraka. Todoroki might be more bubbly and friendly, while Uraraka could become more stoic and reserved. This would change their approach to hero work and their friendships.
You could also swap the personalities of All Might and Aizawa. All Might could be more laid - back and sarcastic like Aizawa, and Aizawa could take on All Might's positive and energetic persona. It would be really fun to see how they handle their respective roles in this new state.
One idea could be to swap Ruby and Weiss's personalities. Ruby, with Weiss's more uptight and rule - following nature, would be strict about combat training and protocol. Meanwhile, Weiss, with Ruby's carefree and enthusiastic personality, would be more likely to charge into situations without over - thinking. This would create a lot of humorous and interesting character interactions.
One idea could be to swap the personalities of Twilight Sparkle and Pinkie Pie. Twilight could become super bubbly and party - loving, while Pinkie Pie could turn into a studious and serious pony. It would lead to hilarious situations as they try to adapt to their new personalities within their daily lives in Ponyville.
First, study the original characters thoroughly. Know their traits, backstories, and relationships. Then, when swapping their personalities, think about how their new traits would interact with their existing circumstances. For example, if you swap Midoriya and Bakugo, Midoriya's new aggressive personality would likely have a different impact on his relationship with All Might, who was used to his meek self.
One idea could be exploring their training days before they became so well - known. Maybe focus on how they overcame their individual weaknesses. For example, Mirio could be shown struggling with a new type of quirk - based obstacle and how he found a creative way to get past it.
Well, you could start with the costumes. In a genderbend fanfic, the female versions of male heroes might have more stylish or practical costumes. For instance, All Might as a woman could have a more form - fitting suit that still represents her power. You could also play with the backstories. Maybe the female - genderbent Deku had to face different kinds of discrimination in a male - dominated hero world. And of course, there could be new romances or different interpretations of existing friendships.
Another interesting concept is a chatroom that exists secretly among the villains. They plot their next moves, argue about the best ways to take on the heroes, and maybe even have some internal power struggles. It would be exciting to see their different personalities clash in this virtual space.
One idea could be a crossover with Harry Potter. Imagine Deku attending Hogwarts and learning magic while also trying to control his One For All quirk. He could make friends with Harry and they could share their experiences of being the 'chosen ones'.
One idea could be a fanfic where Nezu takes on a mentorship role for a young and struggling hero student. He could use his intelligence and experience to guide the student through difficult challenges.
One idea could be that the villains release a powerful virus that turns most of the population into mindless zombies. The heroes have to not only fight the villains but also deal with the zombie horde. Another could be an apocalyptic event that wipes out most of the world's quirks, and the remaining heroes and villains must adapt to this new powerless world.
Perhaps the villains get hold of the truth serum and use it on a captured hero. This hero reveals some crucial information about the hero society's security measures. It then becomes a race against time for the other heroes to either rescue the captured hero or change the security systems before the villains can act on the information.