Another main character could be Sasuke. Since Sasuke has his own complex relationship with power and the Uchiha clan's history, he might be involved in the story. He could either be an ally or an enemy of the heir of Madara, depending on how the story unfolds and what the heir's goals are.
The main characters could include some of Madara's old comrades or their descendants. They might either support or oppose the heir of Madara. And there could be new characters created specifically for this fanfiction, such as a mentor figure for the heir who has a different view on Madara's legacy.
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.
Well, it could have a plot where the protagonist, as the heir of Madara, tries to reshape the ninja world according to Madara's unfulfilled ideals. Maybe they strive to unite all the ninja clans under a new order.
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.
There could also be some well - known Naruto characters who play important roles in the story. For instance, Naruto or Sasuke could be involved, either as mentors or as characters who are somehow related to the events involving the heir. Maybe Naruto helps the heir come to terms with the deaths they are associated with, or Sasuke has some knowledge about the secrets behind the deaths that the heir needs to know.
Obviously Naruto would be one of the main characters. There might also be his usual friends like Sasuke and Sakura. But since it's a fanfiction about him being the heir of chaos, there could be new characters introduced who are related to this chaos aspect, like some ancient beings or a secret clan.
Well, Naruto is obviously one of the main characters as it's about him being the heir of darkness. Sasuke could also be a major character as his relationship with Naruto is always a central aspect in Naruto - related stories. Sakura might also play an important role, perhaps being one of the first to notice the changes in Naruto due to his new status.
Obviously Naruto would be one of the main characters since it's about him being the heir of Kaguya. Sasuke could also be a main character as Naruto's rival and friend. Sakura might be involved too, as she is part of Naruto's team. And there could be other characters like Kakashi, who would play a role in guiding Naruto as he discovers his new identity. There might also be some new characters introduced that are related to Kaguya's past, who either help or hinder Naruto on his journey.
Obviously Naruto would be one of the main characters since it's about him being the heir to the Uzumaki. Sakura and Sasuke might also be important characters as they are Naruto's friends and comrades. There could also be some original characters created specifically for the fanfiction, like an old Uzumaki sage who guides Naruto on his journey as the heir.
Since I don't know the specific 'naruto kami heir fanfiction', it's hard to say for sure. But it could be a new character who is the heir, maybe a descendent of an important figure in Naruto lore. It might also include well - known Naruto characters like Naruto himself, Sasuke, or Sakura who interact with this heir character.
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.