One popular theme is Harley's redemption. Writers often explore how she can break free from the Joker's influence and find her own identity. Another theme is the origin of their relationship, like how Harley became so obsessed with the Joker in the first place.
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.
There could be a fanfiction where Harley Quinn tries to break free from Joker's control in a more psychological way. Instead of just physical escapes, she battles with her own mind that has been so influenced by him. This could explore their complex relationship deeper.
One idea could be a fanfiction where Harley Quinn tries to break free from the Joker's control completely. In this story, she starts to realize that his love is more about possession. She could meet new allies who help her see her self - worth outside of being the Joker's sidekick.
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.
Well, in some fanfictions, their relationship could start with Harley being the one in control. Instead of the Joker manipulating her, she could be the mastermind behind their schemes, which would be a complete role reversal. It would be interesting to see how the Joker reacts to this new dynamic.
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.