There are fanfictions where an OC who is a Faunus themselves but disagrees with the White Fang's methods. This OC could be part of a group that aims to reform the White Fang from within. For example, they might use diplomacy and education to change the views of the White Fang members who have been radicalized. In these stories, the conflict between the OC and the White Fang creates a lot of drama and interesting character development.
Some fanfictions feature an OC who is a human but has befriended Faunus. When the White Fang starts causing trouble in the city, the OC decides to take a stand against them. This OC might not have any special powers but uses their wits and knowledge of the city to outmaneuver the White Fang. They could also form alliances with other humans and Faunus who want peace, and the story could revolve around their efforts to stop the White Fang's more extreme actions.
One interesting story could be where an OC with unique powers challenges the White Fang's ideology and has to fight against some of their more radical members. The OC might try to bring about peace and understanding between the Faunus and humans, which goes against the White Fang's more violent tendencies in that particular fanfiction.
First, you need to develop your OC well. Give them a clear backstory, personality, and motivation. For example, if your OC is a Faunus who opposes the White Fang, explain why. Maybe they had a bad experience with the White Fang's violent tactics. Then, plan the conflict carefully. Decide what the main issues are between your OC and the White Fang. Are they fighting over ideology? Territory? Or something else?
An OC that is a spy within the White Fang for a different organization. They are trying to figure out the White Fang's true intentions and stop any potential terrorist activities. This would involve a lot of secrecy, betrayal, and moral dilemmas as the OC gets closer to the truth.
One interesting White Lantern OC fanfiction could be about an ordinary person who becomes a White Lantern and has to learn to control its powers. They might face challenges like dealing with the emotions that fuel the lantern's power.
I really liked 'A Path of Redemption'. In this fanfic, the White Fang OC has a complex past with the organization and Weiss is initially very distrustful. But as the story progresses, their interactions are really interesting and it's well - written.
Another theme is self - discovery. The White Fang OC often has to reevaluate their place in the world, especially in relation to Weiss and her worldviews. And Weiss also discovers new things about herself through their interactions.
In a Saitama vs OC fanfiction, a plot twist could be that the OC has the power to make Saitama lose his strength. However, the OC doesn't want to use this power because they admire Saitama and want to test their own strength against him fairly. Another interesting twist could be that the OC is a part of a bigger plan by some mysterious organization. They use the fight against Saitama as a distraction while they carry out their real objective elsewhere. And as the fight progresses, Saitama realizes this and has to decide whether to continue the fight or go after the real threat.
For a 'Plants vs Zombies OC Fanfiction', you could base your OC on a real - world plant or zombie - like concept. For instance, an OC plant inspired by the Venus flytrap but with the added ability to move around to catch zombies. A zombie OC could be modeled after a mummy, with bandages that can be used as weapons. Also, consider an OC that is a little girl plant who can sing to boost the morale of other plants and make them stronger against the zombies.
Start with a backstory. For example, if your OC was part of the White Fang since childhood, it would shape their beliefs and actions. Maybe they saw the good in the White Fang's original goals but are now disillusioned with the violent path it has taken.
One idea could be an OC who has the power to nullify Superman's powers temporarily, making the fight more evenly matched against Batman. This OC could be a scientist who has developed a special device after years of studying Kryptonian physiology.
Perhaps the OC is a new kid in town who is initially scared of Kat but then discovers a hidden connection between them. Maybe they both come from the same alien origin, which changes the way they interact and fight.