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.
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.
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.
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, 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.
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 surely a main character. And depending on the plot, characters like Kakashi could be important. He's Naruto's teacher and might try to guide Naruto away from the allure of darkness. Also, Orochimaru could be a key figure. He's always been associated with dark arts in the Naruto series, and in this fanfiction, he might play a role in Naruto's exploration of the darkness, either as an ally or an enemy.
The main characters would surely include Naruto. Then, depending on the direction of the fanfiction, characters like Jiraiya could be important as he might be the one to help Naruto understand and control his dark side. There could also be some dark - themed characters that are part of Naruto's heritage or the source of his 'son of darkness' status. And of course, his friends, even if they are initially wary of him, would still be key characters as they react to Naruto's transformation or discovery of his new identity.
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.
Obviously Naruto would be one of the main characters as he is the 'King of Darkness' in this fanfiction. Sasuke could also be a main character as his relationship with Naruto is so central in the original series and would likely be explored in a new way in this dark version. Sakura might also be a main character as she may try to bring Naruto back from the dark side.