Well, in a fanfiction where Naruto becomes the Juubi, his character arc would take a wild turn. He was always about hard work and determination, but with the power of the Juubi, he might struggle with not becoming too over - powered and losing his humanity. His sense of right and wrong could be tested as the Juubi's power might have its own influence. And the story could explore how he uses this new - found power to protect his world and those he loves, or if he is even able to control it.
In this kind of fanfiction, Naruto becoming the Juubi would completely change the Naruto universe. It would mean he has an insane amount of power. He could potentially reshape the world, bring peace in a way no one expected. His relationships with other characters like Sasuke would also be very different. Sasuke might be both in awe and a bit jealous of this new power Naruto has.
Naruto becoming the Juubi in a crossover fanfiction could lead to new alliances. Other characters from different series might see him as a valuable ally or a threat. For instance, characters from Bleach might approach Naruto differently. And Naruto himself might have to decide who he can trust with his new power.
If Naruto becomes the Mandarin in fanfiction, his personality would surely have an impact on how he wields the power. Naruto is known for his strong sense of justice and protecting his friends. So, instead of using the power for evil as the Mandarin sometimes does in the original stories, Naruto would likely use it to safeguard his village and the ninja world. He might even try to find a way to use the power to bring peace between different ninja clans and villages, just like he always tries to do with his own abilities.
Naruto becoming a samurai in fanfiction could be due to a mission in a region where samurai are prevalent. There, he witnesses their discipline and self - sacrifice. Inspired, he decides to embrace the samurai way. This would bring about a conflict within him as he tries to balance his ninja roots with his new samurai ideals. He might even try to bridge the gap between the ninja and samurai worlds.
In this fanfiction concept, Naruto becoming the Shinigami could bring a whole new dynamic to the Naruto universe. He could use Shinigami - like powers for things like judgment and dealing with the souls of his enemies. It might also change his relationships with characters like Sasuke, as he now has a different kind of power and responsibility.
Perhaps Naruto's transformation into a Predator - like being changes his appearance. He might have some Predator - like physical features such as glowing eyes or enhanced strength. This could lead to his friends initially being scared or confused, but as they see him use these new powers for good, they come to accept him. In the story, he could also learn to control these powers, so they don't overtake his original ninja nature.
One possible scenario in a fanfiction where Naruto becomes Pein could be that Naruto is exposed to some dark jutsu that alters his mind. This jutsu might be related to the Rinnegan's power. As a result, he starts to adopt Pein's ideology of bringing pain to the world in order to create peace. His friends would be shocked and try to bring him back to his normal self.
Well, Naruto as a genie would be a really cool idea for a fanfiction. His character already has a strong sense of justice and a big heart. As a genie, he would be able to spread his positive influence even more widely. Imagine Naruto granting the wish of a poor village for food and resources. He could also use his genie powers to create illusions on a grand scale, fooling the enemies of the village. And his bottle or lamp (where he is trapped as a genie) could be hidden in some super - secret location in the Hidden Leaf.
If Naruto becomes the Juubi in fanfiction, he would likely gain an incredible amount of power. He might be able to reshape the ninja world. His physical abilities would be off the charts, with strength, speed, and durability far beyond what he had before. His chakra reserves would be limitless, allowing him to perform extremely powerful jutsus without tiring easily. Also, his new form could potentially change the balance of power among the ninja villages, making Konoha the most dominant force. And he could use this power to protect his friends and the entire ninja world from any threat.
In a Naruto becomes a Kitsune Hanyou fanfiction, the story could explore how his relationships change. His friends might be initially shocked or even a bit scared. But as they see that Naruto is still the same person deep down, they would come to accept his new form. His relationship with Sasuke could take an interesting turn. Sasuke, being a rival, might see Naruto's transformation as a new challenge and strive to become stronger himself. And Naruto's relationship with his teachers, like Kakashi, could involve more in - depth training to master his new powers.
In fanfiction, if Naruto Hinata becomes naughty, it could mean a departure from their usual personalities. Maybe Hinata starts to play pranks on Naruto, like hiding his headband in a really sneaky place. It could add a new and humorous dynamic to their relationship.