The OC could be an artist who is commissioned to create a grand piece for Kotal Kahn's palace. As they interact during the creative process, they discover shared values and interests. Also, the OC might be a healer who tends to Kotal Kahn's wounds after a difficult battle. Their gentle touch and kind heart draw Kotal Kahn to them.
A fanfiction could explore a scenario where Kotal Kahn and Erron Black are both on a quest for a powerful relic in Outworld. They cross paths and at first, compete to get to the relic first. However, they soon discover that the relic is cursed and they must work together to break the curse. This forces them to put aside their differences and in the process, they develop a bond that goes beyond mere acquaintance.
One idea could be a story where D'vorah is initially sent to spy on Kotal Kahn but ends up developing real feelings for him. As she tries to balance her loyalty to her original cause and her newfound emotions, it creates a lot of internal conflict.
One possible analysis could be in terms of the relationship dynamics between Kotal Kahn and Jade. Their interaction might bring out different aspects of their personalities. For example, Kotal Kahn's leadership qualities could be contrasted with Jade's loyalty and combat skills. It could also explore how they might support or conflict with each other in the fictional world they inhabit.
One theme could be loyalty. Both characters are known for their loyalty in their respective storylines. In the fanfiction, their loyalty could be tested when faced with difficult choices that involve each other. For example, if one has to choose between their own people and the other character.
To create a believable relationship, start with establishing their initial interactions. If they meet in a hostile situation, like Kotal Kahn facing off against the OC's group, there should be a gradual shift. Show how they begin to understand each other's motives. For example, if the OC is trying to protect their home from Kotal Kahn's expansion, he could come to respect their loyalty.
One common theme could be power dynamics. Given that Kotal Kahn is a powerful leader and Erron Black is a skilled mercenary, their relationship might explore how their different levels of power interact. For example, in some fanfictions, Erron Black might be initially in awe of Kotal Kahn's power but then find ways to be an equal in their relationship.
First, understand the characters well. Know D'vorah's motives and her somewhat alien nature, and also Kotal Kahn's leadership style and his sense of honor. Then, create a strong plot. It could be a love - hate relationship that develops over time.
One place to look for 'Erron Black x Kotal Kahn' fanfiction could be Archive of Our Own (AO3). It has a wide range of fan - created works. You can search for the specific pairing there, and you might find some interesting stories that explore their relationship, whether it's a friendship - turned - more or an instant attraction kind of scenario.
One idea could be that the OC is a healer who stumbles upon Frankenstein's monster in the woods. The OC decides to help the monster, despite the danger, and they form an unlikely bond. This could lead to a story of redemption for the monster and a journey of self - discovery for the OC.
Maybe the OC is a scientist who has developed a device that can temporarily steal The Flash's speed. At first, the OC uses it for personal gain, but then realizes the chaos it's causing in the city. They then team up with The Flash to take down other villains who are after the device. Or, the OC could be a meta - human with the ability to see the future in flashes. The Flash initially doesn't trust the OC, but as they start to have the same visions, they have to work together to prevent a major disaster from happening.