Madara could potentially be a wildcard character in One Piece fanfiction. He might not have a clear - cut allegiance. He could start off by helping a group like the Revolutionary Army, but then later switch sides depending on his own self - interests. His complex personality and powerful abilities would make him a character that could change the course of the story at any moment. He could introduce new concepts and powers to the One Piece world, and his interactions with the existing characters would be full of drama and tension.
She could be a navigator. Since she's related to Luffy, she might have a natural sense of direction on the Grand Line. This would be a huge help to the crew, as getting lost in the One Piece world can be very dangerous.
He could be a mentor figure. Goku has a lot of experience in fighting powerful enemies and growing stronger. He could teach the demigods in Percy Jackson's world some new combat techniques.
He could be a transfer student. Just like how many characters join UA High, Killua could transfer in with his unique set of skills. He would be the cool and mysterious new guy that everyone is curious about.
He could be a mentor. Given his vast combat experience and his ability to master different techniques, he could guide the young heroes in My Hero Academia. Just like how he was trained by Master Roshi and others, he could pass on his knowledge to the likes of Izuku or Bakugo.
Ichigo could be a catalyst for change. His arrival might disrupt the status quo in the hero world. For instance, his different approach to fighting villains, which is more about eliminating threats rather than just subduing them as in My Hero Academia, could start a debate among the heroes about the best way to deal with evil. And his unique powers could inspire new ways of thinking about quirks.
He could play the role of a disruptor. Just like his character in his own universe, he would disrupt the existing power dynamics in Naruto. His overpowered abilities would make him a force to be reckoned with, whether he's on the side of good or bad.
The character could have the ability to use chakra with their sword. They might be able to perform ninjutsu through the sword, like creating fire or lightning attacks. Also, they could have super - fast sword strikes similar to some of the advanced swordsmanship techniques in Naruto.
In this type of fanfiction, hypnosis often acts as a plot device. It can create scenarios where characters' inhibitions are lowered. In the context of One Piece, it can make pirates or marines behave differently. For the lemon aspect, hypnosis can be the reason for characters to show more of their passionate sides, perhaps leading to some steamy moments. However, it should be noted that this kind of fanfiction should still adhere to some basic moral and respectful guidelines.
Goku could be a hero who saves the day. For example, when the Rebels are facing a powerful Sith Lord, Goku shows up and uses his Ultra Instinct to defeat the enemy. His pure - hearted nature would make him a natural ally of the good guys in the Star Wars universe.
Hashirama might become a powerful ally or a feared enemy in the Game of Thrones fanfiction. If he aligns himself with a certain house, his powers would make that house very difficult to defeat. He could also be a lone wanderer, using his skills to help the common folk. For instance, he could use his wood - style jutsu to create shelters for the poor or to clear paths in the forest for travelers. He would be like a force of nature in the world of Westeros, disrupting the normal power dynamics.