Obviously Naruto is a very important character as he is the heir to all clans. Sasuke might also play a significant role. He could be Naruto's ally or rival in the story. Sakura might be there to support Naruto and use her medical skills to help in his journey.
Well, one possibility could be that Naruto discovers he has a special connection to all the clans. Maybe he starts to learn unique jutsus from each clan and uses them to bring peace to the ninja world.
There could be a member from each of the four clans as main characters. For example, a strong - willed Uchiha, a wise Hyuga, a brave Aburame, and a resourceful Nara.
Naruto himself is often very popular. His energetic and determined personality makes for great stories in the fanfiction. He can bring his never - give - up attitude to the Clash of Clans battles.
Obviously Naruto would be one of the main characters. There could also be characters from the Harry Potter series such as Harry Potter, Ron Weasley, and Hermione Granger. They might interact with Naruto, helping him understand his new role as the heir of Gryffindor.
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 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.
Naruto's family members would be important characters. His father Minato might appear in flashbacks to give some clues about the Whirlpool inheritance. Hinata could also be part of the story, perhaps as Naruto's support system. And don't forget about the villains. There could be antagonists who want to use Naruto's new status as the heir to the Whirlpool for their own evil purposes, like Orochimaru or some new, unknown enemy.