Well, it might feature characters like Karin. She has a special ability related to her blood, but in the main series, she's not always in the spotlight regarding her bloodline. In fanfiction, her bloodline could be explored more deeply, perhaps showing new aspects or how it could be developed further. Another could be Kiba. His Inuzuka clan has its own bloodline, but compared to some others, it might be considered less explored in certain ways. Fanfiction could give his bloodline more significance and unique developments.
The angel bloodline might be neglected in the fanfiction due to the lack of connection to the existing Naruto lore. In the Naruto world, there are already established power systems and lineages. If the angel bloodline is not carefully tied to these existing elements, it may be pushed to the side. Additionally, the writer might be saving it for a big reveal later in the story, so it appears neglected in the early parts.
Often, an original character that has Saiyan traits and is neglected in the Naruto world can be a main character. This character might be an outcast, like a young boy or girl with Saiyan - like strength but is shunned by the ninja community.
Side characters from the Leaf Village are often main characters in such fanfictions. For instance, characters like Rock Lee who, while popular, still had some aspects of his story that could be further explored. His hard - working nature and his unique fighting style could be the center of a story where he overcomes more challenges that were previously neglected in the main series.
Some original characters created by fanfiction writers might also be the main focus. These could be characters who are born into a family with the rinkaku bloodline and their journey to master it while facing the challenges of the Naruto world, like dealing with other powerful clans and the ever - present threat of the Akatsuki.
Often, Naruto himself can be a main character. He might be the one who either inherits or has some connection to the Predator bloodline, which then changes his abilities and his role in the story.
Often, new original characters are created who possess the seduction bloodline. They are usually the focus of the story as they navigate the Naruto universe with their unique abilities.
Naruto himself is often a popular character in such fanfictions. Writers might give him an additional immortal bloodline on top of his Uzumaki heritage, which could enhance his already impressive abilities. For example, he could have an immortal bloodline that makes his chakra even more powerful and indestructible.
Sometimes, it could be a reimagined version of an existing 'naruto' character who discovers they have this assassin bloodline. For instance, Sasuke could be written to have a hidden assassin bloodline that awakens, leading to a whole new set of adventures and power - ups for him.
Often, an original character created by the fanfic author is the main character, someone who discovers they have the darkness bloodline. This character may be an orphan or someone with a mysterious past.
There are also original characters that are created specifically for these fanfictions. These original characters might be the sole bearers of the demigod bloodline. They come into the Naruto world and disrupt the existing power balance. They could befriend or oppose the well - known Naruto characters depending on the plot of the fanfiction.