Well, in many 'joker x oc fanfic' works, the OC could be a psychiatrist who tries to understand the Joker. This creates an interesting dynamic as the OC is drawn into the Joker's mind games. Some fanfics also show the OC having some sort of special ability that either attracts or repels the Joker, leading to intense and often unpredictable interactions.
One great 'Joker Harley OC Fanfic' is 'Harley's Redemption'. It delves deep into the character of Harley Quinn as an original character in a new, exciting story. Another one could be 'Joker's New Toy', which has a unique take on the relationship between Joker and Harley. And 'The OC's Impact' shows how an original character can change the dynamic in the Gotham underworld.
One good 'Joker Harley Quinn OC fanfiction' could be one where the OC is a new villain in Gotham who tries to disrupt the relationship between Joker and Harley Quinn. Maybe they start by causing misunderstandings between them, like forging messages from Harley to Joker saying she's leaving him for someone else. This could lead to a whole new dynamic where Joker is on a rampage looking for Harley, while Harley is confused as to why Joker suddenly turned on her.
One popular one could be 'The Dark Alliance' where the Joker teams up with a powerful original character who has telekinetic powers. Their interactions are full of chaos and mind - games.
One great 'Joker OC Harley fanfiction' could be 'The New Face in Gotham'. It's about a new original character who gets involved with the Joker and Harley's chaotic world. The story has great character development for the OC and shows how they interact with the iconic duo.
One popular 'harry as joker fanfic' might be 'The Dark Transformation of Harry'. In this story, Harry takes on the chaotic and unpredictable nature of the Joker. Another could be 'Harry's Jokerish Adventure' which shows how Harry adapts to the Joker - like persona in a unique magical world. There's also 'Joker - Harry's New Identity' where he uses the Joker's characteristics to outwit his enemies.
One good 'alice joker fanfic' story could be the one where Alice and Joker form an unlikely alliance to solve a mystery in their strange world. It has great character development and keeps you on the edge of your seat.
Another idea is to create a story where the OC is trying to find a cure for Joker Venom. They could be a scientist or a vigilante with a personal vendetta against the chaos it causes. They might face many obstacles, like being hunted by Joker's henchmen or not being trusted by the authorities.
One idea could be the daughter's struggle to come to terms with her father's villainous nature. She might try to break away from the Joker's influence and find her own path in Gotham, perhaps becoming a vigilante of sorts. Another could be a story where she is kidnapped by Batman's enemies to use as leverage against the Joker.
There's also 'Joker's New Obsession'. In this fanfiction, the OC has a special skill that catches the Joker's attention. It delves into the psychological aspect of their relationship, exploring how the Joker's mind works when he's intrigued by someone new.
Yes, there are likely some out there. Some writers enjoy exploring unique scenarios like this in the context of the Joker universe. You could also try joining fan groups or forums dedicated to the Joker and ask for recommendations on 'Joker OC pregnant fanfiction'.