Sasuke could also be a major character. He has his own history with the Uchiha clan and Madara. So, in the fanfiction, he might be involved in a power struggle or a search for truth regarding Madara's reincarnation. He could be both intrigued and cautious about this new development.
Naruto himself could still be a main character. His relationship with Madara's reincarnation could be explored, like how he tries to understand this new version of an old enemy and whether he can trust him or not.
Another potential main character could be Kakashi. He has seen a lot in the Naruto world and his wisdom could play a role in dealing with Madara's reincarnation. He might be the one to try and guide the reincarnation towards a more positive path, or at least keep an eye on him to prevent any chaos. Also, his own relationship with Obito, who was influenced by Madara, could add an extra layer of complexity to the story.
Sasuke could be a main character as well. Given his own experiences of being an outcast and having a thirst for power at times, he could relate to Madara in some ways. They might form an unexpected alliance or have a rivalry based on their shared experiences of feeling neglected or misunderstood in the ninja world.
Yes, in certain fanfiction stories Naruto is made out to be the reincarnation of Madara. This can lead to some really interesting scenarios. For example, it could change the way Naruto interacts with characters like Sasuke, who has his own complex relationship with the idea of reincarnation in the original story. It also might affect how Naruto views his own powers and destiny. But again, this is all in the realm of fan - made stories and not part of the official Naruto universe.
Naruto is often paired with Madara in some fanfictions. Their interactions can be really intense, as Naruto tries to either convince Madara to change his ways or fight against his reborn form.
Obviously, the heir of Madara would be a main character. There might also be other characters from the original Naruto series, like Naruto himself. Naruto could be in opposition to the heir, seeing them as a threat to the peace he has worked so hard to achieve.
Obviously, Madara himself is a main character. He is the center of the story's legacy aspect. Naruto might also be a main character as he often represents the new generation and the hope for change in the Naruto universe. He could be the one to either oppose or understand Madara's legacy in the fanfiction.
In some fanfictions, Naruto could be depicted as Madara's reincarnation. Fanfiction allows for a lot of creative liberties, so authors might come up with such an interesting concept to explore new storylines and character dynamics. However, in the original Naruto series, there is no such indication that Naruto is Madara's reincarnation.
When Madara travels through time, he might find allies in unexpected places. For instance, some of the minor ninja clans that were oppressed by the larger clans in the past could see Madara as a liberator if he offers them a better future. On the other hand, those who benefit from the current ninja world order, such as the Daimyo or certain powerful shinobi from other villages, might see Madara as a threat and become his enemies.
Sasuke is often a popular character in these fanfictions. He might play a role in helping Naruto against Madara or have his own motives during their battle. Kakashi can also be a prominent figure, perhaps using his Sharingan in a crucial moment to assist Naruto. Another popular character could be Hashirama, as his connection to Madara is a key part of the original story and can be further explored in fanfiction.
If Naruto was the reincarnation of Madara in fanfiction, there would be a huge shift in character dynamics. His relationships with characters like Kakashi and Tsunade would be re - evaluated as they had different relationships with Madara in the past.
His relationship with Sasuke would become extremely complex. Sasuke, as an Uchiha, might have mixed feelings. On one hand, he could see Naruto as a link to the past of his clan through Madara. On the other hand, he might be wary of Naruto having Madara's essence. They might have to re - evaluate their rivalry and friendship.