Another character could be Kakashi. As a wise and experienced ninja, he would be the one trying to analyze Big Mom's abilities and find a weakness. He could act as a mentor to Naruto and Sasuke in dealing with this strange new threat from another world. Big Mom's interactions with Kakashi, who has his own unique set of skills and knowledge, would add an interesting dynamic to the fanfic.
Obviously, Naruto and Big Mom would be main characters. Naruto would be the one to oppose Big Mom if she was causing trouble in the Naruto world. His determination and never - give - up attitude would be pitted against Big Mom's powerful and often - cruel nature.
One possible main character could be a young and ambitious grandchild who dreams of making a name for themselves outside of Big Mom's shadow. They might be constantly striving to prove their worth in a different way than the family's traditional means.
Minato would be an obvious choice as he was her husband. Jiraiya could also be included as he was Minato's teacher and might have had some interactions with her. Kakashi, being an important figure in Naruto's life, could have some connection to her in the past as well.
One possible plot could be that Big Mom somehow ends up in the Naruto world due to a strange rift in dimensions. She then tries to take over the hidden villages, believing them to be new territories for her to rule. Naruto and his friends have to figure out her strange powers and find a way to send her back to her own world.
The title indicates that Naruto is a central figure. However, in the Naruto world, many characters could be part of this fanfic. It could involve Naruto's family members in spirit, like his father Minato or mother Kushina. His peers from the Ninja Academy such as Shikamaru, Choji, and Ino might also play roles. And don't forget the Akatsuki members. If the story involves Naruto facing some threats during his 'neglected' state, Akatsuki could be the antagonists in this fanfic.
I don't know for sure as I haven't read this particular fanfic. But it could be Naruto and his friends like Sasuke and Sakura as they are very popular main characters in the Naruto series and are likely to be included in most Naruto - related fanfics.
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.