If Naruto becomes the Avatar in fanfiction, it would be really interesting. He would have to learn how to control the four elements which is different from chakra control. But his determination would surely help him master it quickly. And he could bring a whole new perspective to the Avatar world with his ninja way of life.
Well, he'd probably be super OP. He already has his ninja skills and if he gets the Avatar powers on top of that, he could be nearly unbeatable. He might use the Avatar state to enhance his Rasengan or something.
In a fanfiction where Naruto becomes the Avatar, there are many possibilities. Naruto is used to fighting for his friends and village. As the Avatar, he would have a much larger world to protect. He might try to unite the four nations in the Avatar world in a similar way he tried to bring peace to the ninja world. His shadow clones could be used in unique ways to train in different bending arts simultaneously. Also, his experience with different types of chakra could potentially give him an edge when it comes to understanding the spiritual side of being the Avatar.
Well, Naruto's ninja skills would be quite a novelty in the Avatar world. His shadow clone jutsu could be used in various ways, like for scouting or confusing enemies. Maybe he'd learn some bending techniques too and combine them with his ninja moves for some epic battles.
Well, in such a fanfiction, Naruto's ninja skills would be pitted against the Avatar's bending abilities. Maybe Naruto would initially be confused by the concept of bending elements as it's so different from chakra-based jutsu. He might start by trying to use his shadow clone jutsu to outnumber the Avatar, but the Avatar could use airbending to disperse the clones. It could be an epic battle of different power systems colliding.
Well, if Naruto becomes the Kyuubi in the fanfiction, he would likely have an overwhelming amount of power. He might be able to defeat his enemies with ease. But he would also face the struggle of controlling such a powerful and wild force inside him. Maybe his friends would be both in awe and a bit scared of him at first.
Well, if Naruto becomes a homunculus in fanfiction, he might gain some unique alchemical powers. He could have enhanced physical abilities like super strength and speed, similar to what homunculi typically possess in the original concept. His ninja skills would probably merge with these new powers in interesting ways.
Well, in such a fanfiction, Naruto would likely lose all his skills and knowledge as a ninja. He'd be completely dependent on others for care, like eating baby food and being diaper - changed. Maybe his friends would have to protect him from the enemies who might see this as an opportunity to get rid of him once and for all.
Well, if Naruto becomes the reaper in fanfiction, he would probably have a whole new set of powers. He could start reaping souls in the Naruto universe, which would be a huge change. Maybe he'd use his new reaper abilities to deal with the more dangerous enemies in a different way, like sending their souls to some sort of afterlife realm.
If Naruto becomes an Arrancar in a fanfiction, he would likely gain new and powerful abilities. Arrancars have unique Hollow powers, so Naruto might be able to use Cero or other Hollow - based attacks. His physical abilities could also be enhanced, and his appearance would change to something more like an Arrancar. He might struggle with the more evil tendencies that come with being an Arrancar at first, but being Naruto, he would probably find a way to use these new powers for good and protect his friends and the village in a different way.
Well, if Naruto becomes Mikoto, he would be a female in the body of Mikoto. He could bring his own values and experiences as Naruto. This could potentially change the relationship dynamics within the Uchiha clan. He may try to bridge the gap between the Uchiha and the rest of the village in a way that Mikoto might not have been able to do in the original story due to her own limitations and the circumstances of the time.
If Naruto becomes the Flash in fanfiction, he would be incredibly fast. He could use his new speed to outmaneuver his enemies in combat. For example, in battles against the Akatsuki, he could zip around and strike them before they even realize it. His Rasengan might also be enhanced as he could deliver it with the speed of the Flash, making it even more powerful and difficult to dodge.
In this kind of fanfiction, Naruto might gain even more incredible power. He could have enhanced physical abilities like super strength and speed, as well as new jutsu related to the bijuu's nature. For example, if he becomes the Nine - Tails bijuu, he might be able to use the Tailed Beast Ball more effectively and on a larger scale. His appearance might also change, perhaps taking on some of the characteristics of the bijuu, like fox - like features if it's the Nine - Tails. This could lead to new relationships and dynamics with other characters. His friends might be in awe of his new power, while his enemies would be even more fearful.