Often, original characters are created in dark saiyan fanfiction. These could be saiyans who were born with a natural inclination towards darkness. They might have their own motives and backstories that drive the plot, often clashing with the more well - known saiyan characters from the official series.
Vegeta is often a main character in dark saiyan fanfiction. Given his prideful and sometimes volatile nature in the original series, it's easy to imagine him being swayed towards the dark side. Writers might explore what would happen if he fully embraced his darker impulses.
In many of these fanfictions, there are original characters created specifically for the story. These characters can be the ones who either guide the Dark Saiyan on their path of darkness or are the ones trying to stop them. And of course, there are often mentions of the Kaioshin or other powerful beings from the Dragon Ball universe who might get involved in the affairs of the Dark Saiyan due to the threat they pose.
Often, you'll find the precursor scientists and engineers who were at the forefront of the technological advancements. They were the ones creating the STC systems and exploring the boundaries of science. Another type of main character could be the early leaders of humanity, those who were trying to guide the species during this age of growth and expansion.
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.
Naruto is the key figure in Naruto Saiyan Ape fanfiction. His character development with these new Saiyan ape abilities is central. Sakura might also play an important role. She could be the one to heal Naruto when his Saiyan powers go out of control or something. And then there's Kakashi. He could be the mentor figure, guiding Naruto on how to use his Saiyan - like abilities in a more strategic way for their ninja tasks.
Sometimes, other gods and goddesses make an appearance. Athena might show up to collaborate with Hephaestus on a project. Their interactions can add a lot of depth to the story. For example, they might have different ideas on how to create a new weapon, and their debates and compromises can be really interesting to read about. And of course, there could be a villainous god who tries to steal Hephaestus' secrets related to his snaps.
Often, you'll find dragon - riders as main characters. They are the ones who have a special bond with the dragons. There are also powerful mages who might interact with the dragons, either as friends or foes.
There are also cases where historical figures themselves are main characters in a different context. For example, a famous historical hero who is taken out of their own time and dropped into a future or an alternate past. They have to adapt to the new situation while also dealing with the fact that they are out of their own time.
There are often the curious ones. These are people who have heard about the Slender Man and are drawn to find out more, which usually gets them into trouble. There are also the ones with a special ability, like being able to sense his presence before others. But no matter who the other characters are, the Slender Man is the most important. His actions and the fear he instills in others are what make the fanfiction what it is. He's like a shadowy puppet master pulling the strings in the story.
Often, the main character is an exiled pokemon itself. It could be a Pikachu that was exiled for accidentally causing a power outage in a major pokemon city. Another common main character could be a trainer who is sympathetic to the exiled pokemon and decides to help them.