Naruto and Sasuke are the most common main characters. However, in some 'eternal mangekyo naruto fanfiction', characters from the Uchiha clan could be more prominent. They might have a role in helping Naruto understand and control the eternal mangekyo. For instance, an older Uchiha relative of Sasuke could emerge to teach Naruto about the secrets and true potential of the eternal mangekyo.
Definitely Naruto, since it's about his eternal mangekyo. Kakashi could also be a main character in some fanfictions. He has his own sharingan experience and could play a role in guiding Naruto in using the eternal mangekyo. Also, characters like Sakura might be involved, perhaps as a support to Naruto in his journey with this new power, or as someone who is affected by the changes in Naruto because of the eternal mangekyo.
Naruto is usually a main focus, as the title implies it has to do with his connection to the eternal mangekyo. Sasuke is also often a key character. Their relationship and how it changes due to Naruto having the eternal mangekyo powers can be a major part of the story.
Sasuke Uchiha is often a central character. Since he already has the Sharingan in the original series, in fanfiction with the Eternal Mangekyo Sharingan, he can be further developed. His journey to master this new level of power and how it affects his relationships, especially with Naruto, can be a major focus.
Naruto is often a central character. Since he has such a complex personality in the original series, fanfiction writers like to explore different aspects of him in the context of duality. They might show his struggle between his role as a hero and his inner insecurities.
In addition to the main characters from the original series, some fanfictions in 'naruto paragon fanfiction' might introduce new characters. These could be characters with unique abilities or backstories that interact with Naruto and the gang. They might be from a long - lost clan or have a special connection to an ancient ninja art, which then becomes intertwined with Naruto's journey in the fanfiction.
Naruto is the central character in 'naruto dark naruto fanfiction'. But characters like Orochimaru can play a big role. He might see an opportunity in a darker Naruto and try to manipulate him for his own gain. Hinata could also be a main character in some fanfictions. Her love for Naruto might be put to the test as she tries to understand and save Naruto from his dark path. And the Sannin, especially Jiraiya, might be involved as they were important in Naruto's development in the original and could have a role in dealing with his new, darker nature.
Naruto himself is often a central character. His growth and how he interacts with his family members while enjoying the 'family benefits' are common focuses. For example, his relationship with his father Minato, if Minato were to be brought back in some way, and how they share ninja knowledge and family secrets.
Naruto and Sasuke are often the main focus. Their complex relationship, which has elements of rivalry and deep - seated friendship, can be easily molded into a 'band of brothers' dynamic. They are both powerful shinobi with different outlooks on life, and in fanfiction, they can come together in a more united front, facing challenges side by side like brothers would.
Naruto and Sasuke are often main focuses. Since they are central to the theme of the curse of hatred in the original series, in fanfiction they are likely to be explored even more in the context of this curse. Their relationship and how they each deal with the pull of hatred is a common thread.
Naruto is often a main focus. His determination and unique abilities usually play a big part in the fanfiction stories. His relationship with the Hurricane Suite elements, like how he might use its power or be affected by it, can be a central theme.
Sasuke is also frequently a central character. His complex relationship with Naruto and his own motives can be further delved into within the context of the Mugen Tsukuyomi. For instance, how he might respond to a world created by the illusion that goes against his beliefs or goals.
Obviously, Naruto is a main focus as it's in the title. But often, his friends like Sasuke and Sakura are also important. In fanfiction, their relationships with Naruto can be explored in new ways. For instance, Sasuke might have a different reaction to Naruto's 'miracles' compared to the original story.