Naruto is the central figure in this 'naruto imprisoned by his family fanfiction'. His family, including Minato and Kushina, are likely to be directly involved in his imprisonment. However, other characters from the Naruto universe might also play a role. For instance, Jiraiya could be a character who tries to find out why Naruto has been imprisoned and works towards his release. Also, Sasuke might get wind of Naruto's situation and decide to take action, either to help or because he sees it as an opportunity to gain an advantage.
Naruto himself could be a victim of family betrayal. His father Minato or mother Kushina might be involved in some alternate - universe plot where they turn against him for some dark reason. Sasuke's family is also a likely candidate. Itachi's actions could be re - imagined in a way where his real motives are more about betrayal of the Uchiha family rather than protecting it. And Hinata's family might be involved too, like if Neji, before his death, was made to betray the Hyuga family in some fan - created scenario.
Obviously Naruto himself. Then his parents, Minato and Kushina. His wife Hinata and their children would also be part of it. Jiraiya could also be involved as he was like a father figure to Naruto. And maybe some of the remaining Uzumaki clan members if they are still alive in the fanfiction. Also, characters like Iruka, who was an important person in Naruto's early life, could be there to witness the family reunion.
Obviously Naruto himself is the central character since the story is about him losing his memories. Sakura would likely be involved too. She's one of Naruto's closest friends and a medic - ninja, so she might try to find a way to restore his memories.
There could be new characters specific to the village where he becomes Kamikage. For example, some powerful shinobi clans within that village. Their leaders would be important as they could be Naruto's allies or opponents. Also, the previous Kamikage's advisors might still be around and play a role in guiding or challenging Naruto. Maybe an old sage - like figure who has deep knowledge of the village's secrets and helps Naruto understand and respect the village's heritage.
There could be new characters created specifically for this fanfiction. Maybe a fellow prisoner who has some special knowledge or ability that helps Naruto during his imprisonment. Or a mysterious figure who is behind Naruto's false imprisonment, pulling the strings from the shadows.
The village elders are often depicted as the ones involved in Naruto's betrayal. They might see him as a threat to their power or the stability of the village. Also, some fanfictions might involve Danzo. He has always been a bit of a shadowy figure in the Naruto series, and his underhanded ways could easily be written into a plot where he is behind Naruto's false accusations and subsequent banishment.
Kakashi could be involved too. Given that Kakashi has trained Naruto and seen his growth, Naruto might trust him with his secrets. He could reveal his thoughts on how he wants to change the ninja world for the better and the steps he is planning to take in the future.
Obviously, Naruto himself is the main character in this situation. His friends like Sasuke and Sakura are very likely to be involved. They would be the ones taking care of him, trying to figure out how to turn him back to normal. Kakashi Sensei would also probably be there, guiding them and trying to keep Naruto safe.
Obviously Naruto himself is the central character as it's about his hibernation. His friends like Sasuke and Sakura are also likely to be involved. They would probably be the ones most concerned about his condition and try to figure out what happened.
Obviously Naruto himself would be the central character. Then, characters like Iruka Sensei could still be involved as he was one of the first to notice Naruto's potential in the original story. Also, Sasuke might be there as Naruto's rival. Even the Hokage, whether it's the Third Hokage at first or others later, would likely play a role in guiding or at least observing this unique Naruto.