Let's consider an OC named Malak. He is a Sith Pureblood with a scar across his face from a duel with another Sith. Malak is extremely powerful in the dark side of the Force, but he also has a deep - seated fear of losing his power. This fear drives him to constantly seek out new ways to increase his strength, which often leads him into dangerous and morally ambiguous situations. His character arc could involve learning to face this fear and either succumbing to it completely or finding a way to overcome it in an unexpected way.
Well, for a Sith Pureblood OC in a Star Wars fanfic, you could make her Zara. Zara has a very distinct look with her black horns and violet eyes. She was trained from a young age in the ways of the Sith, but she secretly yearns for a different path. Maybe she has an encounter with a Jedi who makes her question her Sith teachings. This could lead to an interesting internal struggle within her character throughout the fanfic.
One common theme is the struggle between the dark side and the possibility of redemption. Even though Sith Purebloods are often associated with the dark side, some fanfics explore if they can turn away from it.
One way is to make them extremely ambitious. Since Sith are all about power, a Sith Pureblood OC could be constantly striving for more, whether it's more influence in the Sith order or greater control over the Force. For example, they might be willing to betray their comrades to get ahead.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a large collection of Star Wars fanfics, including those focused on Sith Purebloods. Just use the search function and type in relevant keywords.
One common theme is the struggle for power within the Sith hierarchy. Sith Purebloods are often depicted as having a natural inclination towards the dark side, so their quests for more power and influence are frequently explored.
One way to create a Star Wars OC faction in fanfiction is to start with a unique concept. For example, a faction of Force - sensitive outcasts who live on the fringes of known space. They could have their own set of beliefs and traditions regarding the Force that differ from the Jedi and Sith. Maybe they see the Force as a more natural, untamed energy and use it in ways that are more instinctive rather than following strict dogmas.
Another option is to check out dedicated Star Wars fanfiction forums. These forums usually have sections dedicated to different aspects of the Star Wars universe in fanfiction. Look for the Sith Pureblood category or do a search within the forum for relevant stories.
As he spends more time as a Sith, he might start to feel a sense of emptiness. He realizes that the power he sought isn't fulfilling. He could then have a moment of self - reflection. Maybe he meets a character who challenges his beliefs, like a young Force - sensitive who still believes in the good in the galaxy. This makes him question his path and start to seek a way back from the dark side.
Power is a very common theme. Sith are always seeking more power, whether it's through the Force, political means, or by eliminating rivals. Another theme is betrayal. In the Sith world, loyalty can be a very fragile thing, and characters often betray each other for personal gain.
A fanfic could center around a Sith Lord who decides to take over a planet that was once under Jedi protection. He shows the people that his rule, which is based on strength and fear, can bring a different kind of order compared to the Jedi's more diplomatic and peaceful approach. The story could explore how the planet's inhabitants react to this new regime and if any of them are swayed to the Sith's ideology.
First, think about their backstory. Maybe they were once a Jedi who was seduced by the dark side. For appearance, give them a menacing look, like dark robes and a red lightsaber. Their personality could be very ambitious and power - hungry.