Naruto is often still a main focus. Since he is the protagonist of the original series, fanfic writers like to explore different versions of him. But sometimes, other characters like Sasuke also get a lot of attention. Writers might make Sasuke more of a guiding figure for Naruto in a 'renegade' way, rather than just a rival.
Obviously Naruto is the main focus most of the time. But other characters like Sasuke can also be important. Sasuke's own dark past and his relationship with Naruto can be further explored in a 'dark' context. For example, they might become rivals in a more extreme and less friendly way.
Naruto is usually a main focus. Since the concept is related to perfection, his journey to become the best Hokage and the strongest ninja is often explored in greater detail. He might be shown overcoming his flaws more quickly or mastering new techniques faster. Sasuke is also likely to be a central character. His path of revenge and his own pursuit of power can be re - imagined with the idea of perfection, like achieving the ultimate Sharingan or new levels of his combat skills.
Obviously, Kushina and Naruto are the main focuses. Kushina because she's the one who is alive in this fanfiction concept, and Naruto because he now has his mother in his life. Their relationship is often explored deeply, showing how Kushina can guide Naruto in his ninja journey and in life in general.
Sometimes, other characters from the Naruto universe might also be involved. For instance, Minato, Naruto's father and Kushina's husband, could play a role. Maybe the fanfiction could show how Minato would react to seeing Naruto and Kushina together, or how he would be part of their family dynamic in a different way than in the original story.
Well, in this type of fanfiction, Naruko is the central character. However, Kakashi can also be a significant focus. He has to adjust to having Naruko on his team instead of Naruto. His mentoring role might change, and he could be guiding Naruko through different challenges that come with this new identity. Also, characters like Jiraiya might have an interesting role, as he was Naruto's teacher and now would have to deal with Naruko, which could be a whole new dynamic.
Well, in this type of fanfiction, Naruto is the central figure. However, characters from the Akatsuki might also play important roles. They could be intrigued by Naruto's new form and try to either take advantage of it or eliminate him because they see him as a new threat. This would create a lot of action - packed scenarios.
Obviously Naruto and the Kyuubi are the main focuses. Since it's about their crossover, the story often revolves around their connection and how they interact with the new elements introduced in the crossover.
Buffy is often a central focus. Since she's the Slayer, she has to deal with any new threats or problems that arose from the Halloween events. Willow and Xander are also commonly focused on as they are Buffy's closest friends and are usually involved in whatever chaos is going on.
Captain America is also commonly a central character. His old - fashioned values can be at odds with the more modern - thinking Avengers. His leadership style can be both a unifying and a dividing factor among the team, much like a father figure in a dysfunctional family.
Well, obviously Sasuke and Sakura are the main characters usually focused on. Since it's about their relationship and their story in the Naruto Gaiden setting. But often, their daughter Sarada is also a significant character. She can be a source of conflict, like when she starts to question her father's absence or her own identity. And sometimes, Naruto and Hinata might make appearances as supporting characters, adding some friendly or helpful elements to the story.