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.
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 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.
Well, in 'd'vorah x male' fanfiction, it often explores unique relationships. The characters' interactions can be full of tension and drama. Writers might focus on how the male character copes with d'vorah's complex personality and powers. It can also be a way to expand the existing lore of the original work.
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.
A frequent theme in 'd'vorah x male' fanfiction is transformation. The male character may go through a change because of his association with d'vorah. This could be a physical, mental, or emotional transformation. For instance, he might become more confident or learn to be more cunning. Also, the theme of redemption can sometimes be present, especially if the male character has a troubled past and d'vorah helps him move forward.
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.
One common theme is the exploration of their unique relationship. Given their different natures in the Mortal Kombat universe, fanfiction often delves into how they interact and come to understand each other.
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.