A more complex plot could involve a villain from My Hero Academia somehow finding a way to disrupt the Smash Bros world. Maybe they manage to corrupt the power - up items, causing chaos during battles. The heroes from both universes then have to team up to stop this threat. For example, Deku could team up with Mario to figure out how to reverse the corruption and restore order.
Bakugo is also a favorite. His explosive personality and powerful quirk add a lot of drama and action. In the fanfictions, he often has intense rivalries with other Smash characters.
One great 'Super Smash Bros My Hero Academia' fanfiction is 'Heroes in the Smash Arena'. It has an exciting plot where the My Hero Academia characters are thrown into the chaotic world of Super Smash Bros. The character interactions are really well - written, especially Deku's struggle to adapt to the new fighting style.
A plot could revolve around a new character being added to the roster secretly. This character has an unknown power that starts to disrupt the balance in the Smash Bros world, and the other characters must figure out who it is and stop them. For example, this new character could be causing glitches in the battle arenas, making it difficult for the regular characters to fight.
One idea could be a story where all the characters from different universes team up to face a new, unknown threat that is causing glitches in their worlds. For example, Mario, Link, and Pikachu working together in a way they never have before.
One idea could be an OC from a relatively unknown game getting invited to the Smash Bros universe. They have to learn the ropes of the unique fighting style there. Another could be an OC who has a special power that disrupts the balance in the Smash Bros world, causing both chaos and new alliances among the characters.
However, Saitama from One Punch Man (if we were to include him in this crossover fanfiction for the sake of comparison) would be extremely powerful. His one - punch ability means he can defeat almost any opponent with a single strike. But in the context of My Hero Academia characters only, Todoroki might also be a strong contender. His ability to control ice and fire gives him a great range of offensive and defensive capabilities in the battles.
One interesting plot idea could be a character who is new to the Smash Bros universe and their reaction to meeting all the iconic characters. They could start off in awe, gradually learn the ropes of the battles, and form unexpected friendships or rivalries. For example, a character from a relatively unknown game enters and is initially intimidated by Mario and Link but then discovers they have unique skills that can hold their own. Another plot could revolve around a character's reaction to the constantly changing stages, like being really confused when suddenly transported to a new and wacky stage.
Perhaps there's a tournament in the Smash Bros world that Naruto enters. He's an unknown quantity at first, but as he battles, he shows off his ninja skills. The other fighters are amazed and start to study his moves. This could lead to some interesting training sessions between Naruto and characters like Captain Falcon, where they exchange fighting tips and Naruto learns about high - speed racing attacks from him.
One idea could be a tournament where characters from Dragon Ball and Smash Bros universes compete for a super powerful artifact. This would bring together the unique fighting styles of both, like Goku's Kamehameha against Mario's fireballs.
One idea could be a crossover within the Smash Bros universe. For example, characters from Star Allies team up with unlikely allies in the Smash Bros world to face a new, powerful threat that combines elements from both games. Maybe a villain who can manipulate the power - ups and stages in a strange way.