It could be the leader of the group that the assassin belongs to. They might be using the assassin for their own dark purposes and be the main force behind any evil plans.
In 'naruto assassin of the mist fanfiction', a great plot idea could be that the assassin is actually a part of a secret organization within the Mist Village. This organization has its own motives and plans that are against the will of the village. Naruto, being the hero he is, stumbles upon this and tries to stop the assassin from fulfilling the organization's evil deeds. Along the way, the assassin might start to question their loyalty to the organization as they get to know Naruto better.
One idea could be that Naruto is sent on a mission to the Hidden Mist Village and gets separated from his team. He then has to adapt to the Mist Ninja ways to survive. He might learn their unique jutsu, like some water - based techniques, and form unexpected alliances with Mist Ninja who admire his determination.
There's a fanfiction called 'Rising in the Mist'. In this story, a previously unknown character in the Mist Village rises to power. The author does an excellent job of creating a believable backstory for the character and the political intrigue within the village makes it a really engaging read.
One common theme is the exploration of the unique ninja techniques of the Mist Village. Another is the complex relationships among the Mist ninjas. And often, there's the theme of redemption or self - discovery for characters from the Mist.
One common theme is mystery. Since it involves something 'missing' from the Mist, there's often a sense of intrigue about what happened. Another could be adventure, as characters go on a quest to find out what's missing.
Zabuza Momochi is often a popular character in Naruto Bloody Mist fanfiction. His complex past and his skills as a ninja make him an interesting subject for writers. He has a lot of potential for character development in fan - made stories.
Kakashi could also be a main character in certain 'naruto red mist fanfiction'. His experience and knowledge could be important in figuring out the mystery of the Red Mist. He might be mentoring the younger characters on how to handle the new threats and challenges that the Red Mist brings.
One common theme is redemption. Many stories feature mist ninjas who have made mistakes in the past and are seeking to make up for it. Another is the struggle for power within the Hidden Mist Village.
One interesting concept could be the unique interpretations of the Mist Village's culture. For example, how their ninja training might be different from other villages. Maybe they have more emphasis on stealth in water or unique weaponry.