One common theme is the struggle between good and evil. The OC may represent the 'good' trying to influence Oswald, who is often seen as 'evil'.
Oswald Cobblepot x OC fanfiction can be really interesting. It allows fans to explore new relationships and storylines. Usually, the OC (Original Character) can bring a fresh perspective to Oswald's story. It might involve the OC getting involved in Oswald's criminal activities in Gotham, or perhaps being a force for his redemption. There could be a lot of drama, like the OC trying to understand Oswald's complex personality and motives.
There's a fanfiction called 'The Riddler and the Penguin' that focuses on their power struggle and underlying respect for each other. It has a lot of well - written dialogue that really brings their characters to life. In this story, they start off as rivals but gradually find common ground. The author does a great job of exploring their individual motives and how they mesh together.
Friendship is a very common theme. Given their shared Disney heritage, many fanfictions explore how they can overcome their differences and become good friends. Another theme is adventure. They are often put in exciting situations where they have to rely on each other.
One of the common themes is definitely cooperation. Since they are both toon characters, they often have to work together to face challenges. There are also themes of self - discovery. As they interact with each other, they learn more about themselves. For example, Bendy might discover a more caring side of himself when he's with Oswald, and Oswald might find that he can be more daring with Bendy around. It makes for some really engaging stories.
A theme that pops up a lot is the exploration of a different kind of power dynamic. Instead of the usual power struggle, it could be a power - sharing or a mutual - growth kind of dynamic where they both help each other in different ways to gain more influence or just to become better individuals.
Fanfiction.net is also a place to check. There are often some interesting stories about their relationship there. However, the site's interface might be a bit less user - friendly compared to AO3. But it still has a lot of content if you are patient enough to search through the relevant categories.
Another could be a story where they start as rivals but gradually come to respect each other. For example, Edward might initially see Oswald as a brute, but as they interact more, he realizes Oswald has a complex personality and vice versa. They could then form a friendship that defies the expectations of others in Gotham's underworld.
A really interesting fanfiction is 'Cobblepot and Nygma: A New Beginning'. It explores what would happen if they decided to start fresh and work towards a common goal in Gotham, away from their usual power struggles. It has great character development and an engaging plot.
Love and friendship are common themes. Their relationship is often explored in terms of how they care for each other deeply. Another theme is adventure. They go on all sorts of time - traveling adventures in these fanfictions. Time - related themes are also popular, like dealing with time paradoxes or being stuck in different time periods.
A frequent theme is also the exploration of Danny's insecurities. He sometimes feels like he's not good enough for Clara, especially when he compares himself to her time - traveling adventures and the Doctor. In many fanfictions, Clara has to reassure him and help him see his own worth. And of course, there's the theme of adventure. They get into all sorts of exciting situations together, which helps to strengthen their relationship.