Kakashi could be a common character in these fanfictions. He's Naruto's teacher and mentor, so when Naruto is hypnotized, he would likely be one of the first to try and figure out what's going on and how to reverse it. Additionally, characters like Shikamaru, with his high intelligence, might be involved in devising plans to deal with the hypnotized Naruto.
There could also be new characters created specifically for the fanfiction. For example, a mysterious hypnotist who has some vendetta against Spider - Man or the city. This character would bring in new plot twists and conflicts as they use their hypnotic powers to disrupt Spider - Man's life and the safety of the city.
One common theme is the exploration of power dynamics. Hypnosis can be a tool to either gain power over others or lose one's own power. For example, a character being hypnotized might lose their ability to use ninjutsu, changing the balance of power in a fight.
One common theme is the exploration of their relationship. Hypnosis is often used as a tool to either repair or further strain their bond. For example, in some stories, Naruto hypnotizes Sasuke to make him remember the good times they had, which helps in mending their broken friendship.
Another character that can be involved is Kakashi. He might be the one who discovers Naruto has been hypnotized and uses his wisdom and skills to try and reverse it. Also, characters like Sakura could play a role. She may be worried about Naruto and try to help in any way she can, like researching about the hypnosis or providing medical support if needed.
Obviously, Hilda is one of the main characters. Since she is the one being hypnotized, the story likely revolves around her experiences and how she copes with the situation.
Well, if we exclude inappropriate content, a common theme could be the exploration of Naruto's mental state. Hypnotism in this context might be used to show his inner thoughts and fears. For example, it could be about how Naruto overcomes some hidden traumas through this hypnotic experience.
Naruto himself is often a common character. He might be either the one being interrogated or the one helping with the interrogation. Sasuke is also quite common. Given his complex past and the secrets he holds, he could be a prime target for interrogation. Kakashi is another one. His intelligence and experience make him a likely interrogator in many fanfictions.
Besides the main female characters from the original series, some fanfictions also include Tenten. She brings her weapon - master skills and a no - nonsense attitude to the harem. Another character that might show up is Temari. Her strong - willed and independent nature from the Sand Village can create interesting interactions within the harem. And then there's also Anko Mitarashi, who has her own unique charm and can be a wild card in the Naruto harem fanfiction.
Naruto is, of course, a very common character. He's often the central figure as his journey and growth are integral to most fanfictions. Sasuke is also frequently included. His complex relationship with Naruto can add depth to the story within the context of a coven. Sakura might be there too, perhaps as a healer or a member with her own unique skills in the coven.
Kakashi can be a common character too. He might be the one who has to deal with Naruto's pranks and the chaos they cause in the village. Sometimes he might play along or use it as a teaching moment for Naruto. Also, the other members of Naruto's team, like Yamato, could be involved, either being pranked or helping Naruto plan his pranks.