Naruto would surely be one of the main characters since it's about his heritage. There might also be his friends like Sasuke and Sakura as they react to the revelations about Naruto.
Most likely Naruto himself, since it's about his heritage being revealed.
In 'dark naruto heritage revealed fanfiction', it might explore the idea that Naruto's heritage has been concealed for a reason. It could be that his true ancestry is linked to a dark prophecy or a powerful and dangerous bloodline ability. This discovery could set off a chain of events where Naruto has to either embrace or reject this new aspect of his heritage. He may find himself at odds with his friends and allies as they struggle to understand and accept this new Naruto, and he may have to face enemies who are interested in his new - found heritage for their own malicious purposes.
In this fanfiction, perhaps Naruto's hidden jutsu legacy could be revealed. Maybe it shows some secret techniques that he developed but never got to show during the original series.
It could be revelations about Naruto's family heritage that was not fully explored in the original series. Maybe secrets about his parents' past deeds or hidden powers within his bloodline.
Iruka sensei could play an important role. He has known Naruto since he was a child and might be able to provide some insights or memories that are relevant to Naruto's newly - revealed heritage.
I'm not sure exactly as it depends on the specific fanfiction. But it might revolve around Naruto's departure and what he leaves behind for the village in terms of heritage, like his teachings or new ninja techniques.
The main character is Naruto. But other characters like Jiraiya could be very important. Jiraiya was aware of Naruto's heritage to some extent and could be the one to fully disclose it to Naruto in the fanfic. Also, characters from the Uzumaki clan, if they are still alive in the fanfic's universe, could be main characters. They could help Naruto embrace his heritage and teach him about the clan's traditions.
There could also be some original characters created specifically for this fanfiction. For example, a powerful ninja who has knowledge about the merge process and tries to either help or hinder Naruto. Or perhaps an ancient spirit that was somehow involved in the creation of Dark Naruto in the first place and now has an interest in the merge.
Well, without reading the actual 'naruto heritage revealed hates fangirls fanfic', it's hard to say exactly. However, generally speaking, in the Naruto world, heritage can be a complex and important aspect. If this fanfic 'hates fangirls', it could be that the author has some issues with how fangirls in the Naruto fandom react to certain heritage - related plot points. For example, fangirls might overly focus on a character's good looks or popularity rather than the deeper implications of their heritage, and the fanfic might be a critique of that.
In the 'naruto heritage revealed to village fanfic', perhaps Naruto's heritage reveals a hidden alliance that his family had with another village. This could have major implications for Konoha as it might mean new allies or enemies. It could also show that Naruto has a rightful claim to some important resources or positions within the ninja world due to his heritage. For example, his family might have been the original protectors of a powerful artifact that is now lost but whose location could be found through Naruto's heritage. This would not only change how the village sees Naruto but also how the entire ninja world perceives him and his role.