Sasuke could also be a main character. His brooding nature and powerful ninja skills would create an interesting dynamic, especially if he were to encounter some of the more powerful and mysterious Pokemon in Sinnoh. He might be initially dismissive but then grow to respect the Pokemon world.
Ash from the Pokemon Sinnoh series could be brought into the 'naruto sinnoh fanfic' as a main character too. He could meet Naruto and the two could learn from each other. Ash could teach Naruto about Pokemon, while Naruto could show Ash some of his ninja moves.
I think Tsunade could be a main character in a 'naruto himekishi fanfic'. Given her strength and leadership, she could be in charge of the himekishi in the Hidden Leaf Village. Another possible main character could be Rock Lee. His hard - working and determined nature would fit well with the concept of the himekishi. And of course, Sasuke could also be involved. Maybe he has a complex relationship with the himekishi, either as an ally or an antagonist depending on the story's direction.
Obviously, Naruto could be one of the main characters. He could be either a patient or someone helping out at the hospital. Another main character could be Sakura. Since she has medical skills, she could be a doctor or a medic - ninja in charge at the hospital. And then there could be a new character, like a young orphan who is being trained as a medic - ninja at the hospital and has an interesting backstory.
In a 'Naruto of the Sand' fanfic, the main characters could be Kankuro. He has his own unique puppet - using abilities and his relationship with his siblings and the Sand Village could be explored. Another main character could be the Kazekage at the time of the fanfic's setting. Their leadership and decisions would impact the story greatly. Also, Shukaku could be a main character in a sense. Since it is related to Gaara and has a powerful presence, its influence on the events in the Sand Village could be an interesting aspect to write about.
Obviously Naruto himself could be a main character. His determination and never - give - up attitude would be key in facing the Eldrazi threat. Sasuke could also be a main character, his powerful Sharingan and combat skills would be useful in battles against the Eldrazi.
I think Naruto and Itachi could also be main characters in this fanfic. Naruto might look up to Itachi for his self - sacrifice and powerful abilities. Itachi could act as a mentor - like figure to Naruto in the context of the fanfic, guiding him in understanding the Uchiha clan better.
Naruto himself could be a main character. He's always been at the center of things in the Naruto universe, and in a fanfic involving the Illuminati, he might be the one to uncover their secrets.
Obviously Naruto would be one of the main characters. And from 'The 100', Clarke would likely be a main character as well since she is a central figure in her own show.
Naruto himself could be a main character. He could be the one who somehow ends up in the world of the Lannisters and has to deal with their politics. His positive attitude and determination would contrast with the often devious ways of the Lannisters.
The main characters could be Naruto, and a Sylveon Girl. Sylveon is known for its loving and kind nature, and as a Pokegirl, she could be the heart of the group. Then there could be a Lucario Girl. Lucario is a very powerful and intelligent Pokemon, so as a Pokegirl, she would be a great fighter and strategist, working well with Naruto's own combat intelligence.
Obviously, Naruto himself would be one of the main characters as he is the sensei. His students could be a group of new genin. For instance, the children of his old friends like Boruto and Sarada could be among his students.