In many Naruto and Natsumi fanfictions, Naruto is often portrayed as the experienced and somewhat reckless ninja. He brings his trademark energy and determination to the story. Natsumi is usually the character who grows and develops throughout the story. Maybe she starts off as a shy novice but with Naruto's help, she becomes a strong and confident ninja.
Maybe an evil organization that wants to use Naruto's power and the connection he has with Kushina for their own dark purposes. They see Natsumi as an obstacle in their plan because she is always by Naruto's side. This organization could be experimenting with dark jutsu and need Naruto's chakra and Kushina's latent abilities (passed on to Naruto) to complete their evil experiments.
One characteristic could be the exploration of a unique relationship between Naruto and Natsumi. It might show their interactions in ways that are different from the original Naruto story. For example, it could focus on their emotional bond.
Another interesting fanfiction idea could be that Natsumi is a new ninja in Konoha and Naruto is assigned to train her. He shows her the ropes of being a ninja, from basic training to more advanced combat techniques. During this process, they form a strong bond and end up becoming a great team in the village's defense.
Kankuro is another possible main character. He's a puppeteer from the Sand village. Fanfiction might delve into his growth as a ninja, his relationships with his siblings, or his development of new puppet techniques.
Obviously Naruto is one of the main characters. Given the title, he has a significant connection to the Juubi in this fanfiction.
Obviously, Naruto himself is a main character as the story revolves around his revival. His friends like Sasuke, Sakura, and Kakashi are also likely to be main characters. They would be involved in the process of bringing Naruto back or in helping him adjust to his new life after revival.
Often, there are original characters created specifically for the fanfiction that interact with Damocles and Naruto. These characters could be other ninja from the village, or perhaps outsiders who bring new challenges or perspectives to the story. They might have unique abilities or backstories that tie into the overall plot and help drive the story forward, making the interactions between all the characters more interesting and complex.
Since it's fanfiction, the main characters could be a mix of the original Naruto characters and some new ones created by the author. The formless concept might be centered around a new character who has the power to change the Naruto world in some way, and Naruto and his comrades have to deal with the consequences. Maybe it's a formless being that has some connection to an ancient ninja clan, and Sasuke gets involved in uncovering the mystery.
Obviously, Naruto and Amaru are main characters. Naruto is the well - known protagonist from the original Naruto series, and Amaru is the character specific to the fanfiction who often has her own unique story arc.
Obviously, Naruto and Hippolyta are the main characters. Naruto brings his ninja skills, his strong will, and his experience from the Hidden Leaf Village. Hippolyta, on the other hand, represents the strength and wisdom of the Amazons.