Well, in many Jeff the Killer x Jane fanfictions, the theme of power dynamics is quite common. Who has the upper hand in their relationship? Is it Jeff with his killer instincts or Jane with her moral strength? Also, the theme of identity comes up. How do their identities as a killer and a protector (in Jane's case) affect their relationship? And of course, the theme of love in the face of darkness. How can love exist between two such different and dark characters? These are all explored in different ways in the fanfictions.
One common theme is the battle between good and evil within their relationship. Since Jeff is a killer and Jane is often portrayed as more of an anti - hero or hero figure, their interactions can be seen as a struggle between these two forces.
One common theme is redemption. Given their dark and violent pasts, many fanfictions explore the idea of either Jeff or Jane seeking redemption through their relationship. Another theme is the power of love to change, as they are two very damaged individuals and love might be the thing that can transform them.
One common theme is the struggle between good and evil. Jane is often portrayed as more of the 'good' side trying to stop Jeff who is seen as the 'evil' one. So there's a constant battle of morals.
Love - hate relationship is also very common. They are enemies by nature but in some fanfics, there's an underlying attraction or connection that they can't deny. This creates a lot of drama and tension in the stories.
The theme of trust is quite common. Since they might come from different backgrounds or have had different experiences, building trust is crucial in their relationship in these fanfictions. Additionally, the theme of sacrifice often appears. They might have to sacrifice something for the sake of the other or for their relationship to survive. For instance, one might sacrifice a personal ambition to be with the other.
One common theme is revenge. Since Jane has a vendetta against Jeff in the Creepypasta lore, a lot of fanfictions revolve around her attempts to get back at him. Another theme is the struggle between good and evil, as Jane is often seen as a more 'righteous' figure compared to the chaotic and evil Jeff.
One common theme is fear. Since Jeff the killer is a horror character, the fanfictions often play on the reader's fear of him. Another theme is the idea of an unlikely connection. For example, the reader might be drawn to Jeff's dark side in some way.
One common theme could be the exploration of their dark and twisted natures. Since both characters are from the horror genre, their fanfictions might focus on their evil deeds and how they interact in a world full of chaos.
One common theme is the exploration of the 'forbidden' or 'taboo' relationship. Since Jeff is a killer, a relationship with an OC is not something that would be considered normal or acceptable in mainstream society. Another theme is the idea of redemption. As mentioned before, the OC might be the catalyst for Jeff to change his ways. Fear and danger are also prevalent themes. The OC is constantly in a state of fear due to Jeff's nature, but at the same time, there is an allure because of his mystery and power.
One common theme is redemption. Often, either Jeff or Jane has some past mistakes or traumas, and through their relationship, they find a way to redeem themselves. Another theme is self - discovery. As they get closer, they learn more about themselves.
One common theme is obsession. Nina is often depicted as being obsessed with Jeff, and this plays a big role in their relationship dynamics within the fanfics. Another theme is the idea of two 'broken' characters finding some sort of connection. Since they are both killers, they have a shared darkness that can either pull them together or tear them apart.