In addition to the usual Naruto characters, there could be some original characters created specifically for this fanfiction. Maybe there's a mysterious figure who is either guiding Naruto towards the darkness or trying to stop him from fully succumbing to it. Another possibility is that some minor characters from the original Naruto series get more spotlight in this fanfiction and play important roles in the story related to Naruto's 'bringer of darkness' arc.
Well, it could be about Naruto in a much darker and edgier scenario. Maybe it explores a version of Naruto where he is more of an anti - hero or is forced to use darker powers. It might also deal with themes of corruption in the ninja world that Naruto has to face in a very different way than in the original series.
Since it's about Naruto being the 'bringer of the end', Naruto is the central figure. However, other characters like Jiraiya could be important. Jiraiya was Naruto's teacher and had a big influence on him. Also, Tsunade might be involved as she is a powerful figure in the Naruto world. And we can't forget about the Akatsuki members. They are often the antagonists in Naruto stories and could be major players in this fanfiction too.
Well, Naruto is surely one of the main characters since it's a Naruto fanfiction. He is likely the central figure in the story's pursuit of peace. Sakura might also be an important character, perhaps using her medical skills to help in the process of bringing peace, like treating the wounded from past battles.
Naruto himself is likely to be one of the main characters. He might interact with the demon bringer in various ways. Another could be Sasuke. His rivalry with Naruto could be further complicated by the presence of the demon bringer. And perhaps there could be a new character created specifically for this fanfiction as the demon bringer itself.
Obviously Naruto would be one of the main characters as it's in the title. There might also be his friends like Sasuke and Sakura. Maybe some new characters could be introduced as well who are in need of Naruto's hope - bringing influence.
Well, it could be a group of rogue shinobi who profit from war and chaos. They don't want Naruto to succeed in bringing peace because it would mean an end to their lucrative and power - hungry ways.
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.
In addition to the well - known Naruto characters, there could be some characters from the darker corners of the Naruto universe. For example, Orochimaru might play a more significant role, either trying to manipulate Naruto's new power for his own gain or being forced to team up with Naruto against a greater evil that is emerging due to the awakening of the 'Lord of Darkness' power.
Most likely Naruto would be one of the main characters. Depending on the crossover, it could also include characters from the other franchise involved in the crossover.
Most likely Naruto would still be a main character. He is the protagonist of the original series and would probably be central in this fanfiction too, as he battles against the darkness. Sasuke could also be a main character, especially if the story is about his struggle with his own dark side or his relationship with Naruto in this darker context.