In the fanfiction, Harley's character development can be quite diverse. Sometimes she starts as a meek psychologist who is slowly corrupted by Joker. As the story progresses, she becomes more assertive in her own way, even if still under Joker's spell. She might learn to stand up to him a bit more while still being in love with him.
Well, in Suicide Squad fanfiction about Joker and Harley, their relationship is a study in contrasts. Joker is this unpredictable, cruel character. He has a hold over Harley that she can't seem to break. Harley, on the other hand, is this vibrant, if a bit crazy herself, woman who is desperately in love with him. The fanfiction often explores how their relationship develops, whether Harley will ever break free from Joker's influence, or if she'll keep being his loyal sidekick and lover in this dark and dangerous world they inhabit.
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.
Harley Quinn herself is extremely popular. Her complex relationship with the Joker, her wild and unpredictable nature, and her journey of self - discovery make her a fascinating character to write about. Writers often explore her different facets, from her being a victim of the Joker's abuse to her trying to find her own identity outside of their relationship.
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 of the most interesting plot twists could be when Harley realizes that Joker's love for her is just a part of his game. In many Suicide Squad interpretations, Harley is blindly in love with Joker. But if she discovers his true nature, it flips the whole dynamic. It makes her question her loyalty and could lead to her breaking free from his control and becoming a more independent character within the fanfic.