The Joker might react with anger. He could see the pregnancy as something that will tie him down and interfere with his criminal activities. He's not exactly the family - minded type, so he might try to force Harley to get rid of the baby.
Well, the plot could involve Harley Quinn and the Joker having an unexpected pregnancy. It could show how their relationship changes. The Joker might initially be dismissive or even angry, thinking it'll disrupt his plans. But Harley could be determined to have the baby and try to make the Joker understand the importance of family, or at least her version of it. There could also be a lot of drama with other villains or heroes reacting to the news of Harley being pregnant.
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.
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.
In Harley Quinn x Joker fanfic, the character development is often a focus. Harley's transformation from a psychiatrist to a criminal sidekick is interesting. Writers may play with different timelines and scenarios in the fanfic. For example, they might explore what would happen if Harley finally broke free from the Joker's influence earlier than in the original story. This can lead to various plot twists and new character arcs for both Harley and the Joker.
They have a complex and often tumultuous relationship. Sometimes they're partners in crime, but it's filled with power struggles and manipulation.
One popular trope is the 'redemption arc' for the Joker. In some fanfics, there's an attempt to show a softer side of him, perhaps because of Harley's influence. This can be controversial as it goes against the traditional view of the Joker as pure evil.
Well, 'Joker and Harley's Toxic Tango' is a fanfic that really captures the essence of their relationship. It's a rollercoaster of emotions as Harley is constantly pulled between her love for the Joker and her own self - preservation. 'Harley Quinn's Struggle in Joker's World' is another one. In this fanfic, we see Harley trying to find her place in the Joker's chaotic world. And don't forget about 'Joker x Harley Quinn: Unraveling the Madness', which delves into the psychological aspects of their relationship.
She might be shocked at first. Harley Quinn has her own view of Batman and Bruce Wayne, and realizing they are the same person would turn her world upside down.
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.
One interesting plot could be the chaos that ensues when Harley discovers she's pregnant. Maybe she tries to reform Joker into a more family - friendly person. Another could be the reaction of Gotham's villains and heroes to the news. For example, Batman might be conflicted on how to deal with a pregnant Harley who is still associated with the Joker.