Obviously Naruto himself would be a main character as the story is about him being forgotten by his family. His parents, if they are alive in this fanfiction, could also be important characters. They are the ones who are forgetting him, so their actions and reasons for this forgetfulness would be crucial to the story. And perhaps his friends like Sasuke and Sakura could also play important roles. They might be the ones to support Naruto when his family fails to do so, and they could also help him in his quest to figure out what's wrong with his family.
Naruto is the main character without a doubt. His family members, whether it's his father Minato, mother Kushina or other relatives from the Uzumaki clan, are also key characters as they are the ones involved in the forgetting situation. Additionally, Jiraiya could be an important character. Jiraiya has trained Naruto and has a special bond with him. In a story where Naruto is forgotten by his family, Jiraiya could offer not only ninja training but also emotional support. He could help Naruto understand the situation and maybe even help him find a way to make his family remember him again.
In this 'naruto forgotten by family fanfiction', Naruto is the central figure. However, there could be some new characters introduced. For example, a mysterious ninja who might be related to the cause of his family forgetting him. This ninja could either be an antagonist, trying to keep Naruto's family away from him for some evil plan, or a misunderstood figure who is actually trying to protect Naruto in a strange way. Also, Iruka Sensei could be a significant character. He has always been like a father figure to Naruto, and in this story where his real family forgets him, Iruka could step in even more to offer guidance and support.
Maybe there was some kind of powerful jutsu or curse involved. It could be that an enemy cast a spell on Naruto's family, making them forget about him.
The main character is surely the forgotten son. But we can't rule out other important characters. Sakura could be in the story, maybe she discovers some clues about the forgotten son. And Sasuke might also be involved, as he has a long - standing relationship with Naruto. Their children could also interact with the forgotten son, adding more layers to the story. Additionally, there could be some new characters created specifically for this fanfiction, like a wise old hermit who guides the forgotten son on his path.
Since I don't know the specific fanfiction, it's hard to say. But it's likely to include the forgotten doctor, and perhaps some Naruto characters like Naruto himself, Sasuke or Sakura who might interact with the doctor in some way.
There might be some new characters created specifically for this fanfiction. They could be people or creatures that Harry meets during his time of being forgotten and they play important roles in his journey. For example, an old wizard living in seclusion who takes Harry under his wing and teaches him things he wouldn't have learned otherwise.
Naruto is most likely one of the main characters. After all, it's a Naruto Shippuden - related fanfiction.
Maybe it's an evil organization that wants to isolate Naruto. By making his family forget him, they hope to break Naruto's spirit and prevent him from becoming a powerful force in the ninja world. So they target his family's memories as a way to get to him.
In the 'naruto forgotten by family fanfiction', perhaps there's some kind of curse or misunderstanding that makes his family forget him. Naruto would then have to struggle not only with the normal challenges in the ninja world but also with the emotional pain of being forgotten by those who should love him the most. He may try different ways to make them remember, like showing great feats of strength or kindness, and along the way, he could make new friends who become like his new family.
Well, the forgotten child themselves is obviously a main character. They could be an original character created by the fanfiction writer, with their own personality and backstory. Naruto might also be a prominent character as the story is set in the Naruto universe. He could be the one who discovers the forgotten child or be involved in their journey in some way.
Well, there could be characters like Iruka - sensei. Since Naruto has been forgotten by his parents, Iruka might play an even more important role in Naruto's life, becoming like a surrogate father figure. Another character could be Sasuke. Sasuke, who also has his own family issues, might either be a source of understanding for Naruto or a contrast to his situation.
One possible reason could be some kind of dark magic or jutsu that has affected his family's memories. Maybe an enemy cast a spell specifically to make his family forget about him to weaken him.