You need to consider their different backgrounds. Superman has his Kryptonian heritage and his experiences in the Injustice 2 world. The reader could be from a more ordinary background. Show how these differences can both create friction and also draw them together. For instance, the reader might teach Superman about the simple joys of Earth life that he's forgotten in his pursuit of justice, which deepens their connection.
Obviously, Batman and Superman are the most prominent. Their complex relationship, which is a mix of friendship, rivalry, and ideological differences, makes them central to any fanfiction in this universe. However, characters like Wonder Woman also often play important roles. In some fanfictions, she may be caught in the middle of the Batman - Superman conflict, trying to mediate or having her own stance on the events that unfold.
One interesting storyline could be a redemption arc for Superman. In the Injustice universe, Superman has gone down a dark path. A fanfiction might explore how Batman tries to bring back the good in him, with lots of emotional confrontations and moral debates between the two.
One idea could be a story where the reader is a new hero in the Injustice 2 universe. Superman, initially suspicious, starts to see the good in the reader. As they team up against common threats, a bond forms between them. Maybe the reader has a unique power that Superman comes to rely on.
First, decide on the OC's origin. Are they from Earth in the Injustice universe, or from somewhere else? If they're from Earth, what kind of upbringing did they have? For example, if they grew up in a war - torn area because of Dark Superman's actions, it would shape their character. Next, think about their motivation. Is it revenge against Dark Superman, or a desire to restore true justice? Also, give them some unique traits, like a special skill or a distinct personality quirk. For instance, they could be extremely stubborn in their beliefs, which would lead them to take on Dark Superman even when others won't.
The OC could be an alien with a different kind of power set that is a threat to Superman. However, instead of fighting, the OC tries to reason with Superman. They show him the consequences of his actions through their own experiences on their home planet where a similar situation occurred, which might make Superman re - evaluate his path.
First, create a strong conflict. Since it's Dark Superman, you could have the reader oppose his extreme ways. For example, the reader could be part of a resistance group. Second, develop the relationship between the reader and Dark Superman gradually. Maybe they start as enemies but find common ground. Third, add some twists. For instance, the reader discovers a secret about Dark Superman that changes their perspective. Keep the plot moving forward and don't let it get stagnant.
One common theme is the struggle between power and morality. In the Injustice universe, Dark Superman has a very different view on justice compared to the traditional Superman. In an x reader fanfiction, the reader often has to navigate this new moral landscape created by Dark Superman's actions. Another theme could be redemption. Maybe the reader tries to bring back the good in Dark Superman. Also, themes of love and loyalty can be explored as the reader might be in a relationship with Dark Superman and has to decide whether to support his extreme methods or try to change him.
Well, a possible plot for an Injustice Dark Superman x OC fanfiction is that the OC is a scientist. They discover a way to weaken Dark Superman's powers using a special type of kryptonite they created. As they try to implement their plan, they face many challenges, like Dark Superman's loyal followers. Another idea is that the OC is an ordinary person who gets superpowers accidentally. They then decide to use these powers to oppose Dark Superman and restore justice. They could form a resistance group with other like - minded characters in the Injustice world.
The OC could have a unique power that directly counteracts Superman's. For example, if Superman has his heat vision, the OC could have the ability to absorb and redirect energy. This would make their encounters very intense and give the OC an edge in battles.