Well, it depends on your taste. Some 'Penguin x Riddler fanfiction' might focus on their criminal partnerships in Gotham. They could be plotting together against Batman or other villains. You can explore different platforms to find the ones that suit you best.
A lot of 'Penguin x Riddler fanfiction' has the theme of power struggle. Since they are both strong - willed villains, they could be vying for control in Gotham's criminal hierarchy. And sometimes, there's a theme of unexpected friendship or partnership that develops between them in the face of common enemies.
The contrast between their characters. The Penguin is more of a brute - force type, while the Riddler is all about his intellect. Their interactions can be really engaging as they try to outmaneuver each other or work together.
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.
Jeff is a character who has a dark backstory that led him to become a killer. In the fanfiction, he is the object of Nina's affection. Nina, she's not just a sidekick. She has her own motives and actions. She might try to change Jeff or just be with him no matter what. Their relationship and their individual personalities are what drive most of the stories in this fanfiction.
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.
The main characters are, of course, Jane the Killer and Jeff the Killer. Jane is often depicted as a vengeful figure, while Jeff is a well - known and terrifying killer. Their interactions are the focus of this fanfic.
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.
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.
A different plotline could be set in an alternate universe where Jeff and Nina are not killers. They meet in a more normal setting, like a school or a small town. However, their dark pasts or tendencies start to surface, and they have to deal with how this affects their new - found relationship, all while trying to keep their true selves hidden from the people around them.