Their relationship could potentially soften on Joker's part. Having a baby might make him see things in a different light. He might not be as cruel or reckless as before, at least when it comes to the baby. Harley, on the other hand, would be more determined than ever to keep the family together, even if it means constantly trying to reform the Joker. But at the same time, the pressure of raising a child could also lead to more fights between them as they struggle with their own issues and new responsibilities.
The relationship might become more complex. Harley would likely be more protective and demand more stability from the Joker for the sake of the baby.
The relationship can be portrayed as a journey. At first, the Joker and Harley might not know how to be parents. They could be clumsy and make mistakes. But as the baby grows, they start to adapt. The Joker might start to soften a bit, realizing that his actions could affect the baby's future. Harley would be the glue that holds the family together. She could be the one who arranges family dinners, even if it's just pizza in their hideout. The baby could also bring out a competitive side in them, like who can teach the baby the coolest trick or skill.
Well, the fanfiction could start with Harley Quinn finding out she's pregnant. The Joker is shocked at first but then decides to keep the baby as part of his 'grand plan'. As the baby grows, they have to deal with raising it in their chaotic world. Harley tries to give the baby a normal life as much as possible, while the Joker is constantly getting into trouble that puts the family in danger. It could also explore how the baby affects their relationship, whether it brings them closer or drives them further apart.
Their relationship would likely become more complex. Harley might start to trust Batman more. Instead of seeing him as just another authority figure to rebel against, she could view him as a protector. This new - found trust could lead to her being more open to his ideas about reforming and leaving her life of crime behind.
Harley's character could develop in many ways. She might become more protective and motherly, which is a big change from her usually wild and carefree self. This new - found sense of responsibility could make her question her relationship with Joker and the life of crime they lead.
She would likely become more vengeful. Losing her baby is a huge blow, and Harley Quinn, known for her wild and impulsive nature, would want to seek revenge on whoever or whatever was responsible.
Some fanfictions explore their relationship development through Harley Quinn's past. Maybe she has flashbacks to her life before Joker, and this new self - awareness makes her question their relationship. Joker, in turn, has to deal with a Harley who is becoming more independent, and this creates a new dynamic between them.
The Dark Knight's version of the Joker adds an extra layer of darkness to their relationship in fanfiction. Writers might explore how the Joker's chaos affects Harley even more in this darker context. For example, Harley could be torn between her love for the Joker and the realization of the horror he spreads in Gotham.
In Suicide Squad fanfiction, the relationship between the Joker and Harley Quinn is often complex and intense. The Joker is typically portrayed as a controlling and manipulative figure, while Harley is blindly in love with him despite his abuse. Their relationship is a twisted form of love that blurs the lines between sanity and madness.
Joker would probably see the Twilight world as a new playground. He might try to mess with the Cullens, seeing them as too 'perfect' and in need of some chaos. Harley, on the other hand, could be fascinated by the idea of eternal love in the Twilight series. She might even try to get involved in the relationships, perhaps causing some jealousy or misunderstandings.