Well, it could be about Bella trying to break free from her father's, the Joker's, evil influence. Maybe she has a good heart in contrast to him and wants to use her skills for good, like helping Gotham in a more positive way.
In this fanfiction, it could be that Bella discovers some long - hidden truth about her father's past that makes her question everything. She might then start a journey to either redeem him or completely distance herself from him. Along the way, she'll face challenges from the criminal underworld as well as the heroes of Gotham.
Well, one possibility could be that Bella Swan has to deal with the chaos that comes with being the Joker's daughter. Maybe she struggles to balance her normal life, like in Forks, with the dark and unpredictable world of her father. She might have some of the Joker's traits, like a wild sense of humor but also a bit of madness that she has to control.
There's also a possibility that some of the more morally grey characters in Gotham, like Catwoman, could be Bella's allies. Catwoman has her own code of ethics, and she might relate to Bella's struggle between good and evil. They could work together in certain situations, especially if there are mutual benefits involved.
One idea could be that the Joker is trying to protect his baby daughter from his enemies in the criminal underworld. He might use his unpredictable and chaotic methods to keep her safe, while also struggling with his own inner demons as a father.
In this fanfiction, Bella's vampiric allure might attract the Joker in a different way than he's used to. He could start to see her as a new kind of plaything. Bella, however, might see the Joker as a way to break free from the monotony of her vampire existence. Their interactions would be filled with tension, as Bella tries to keep her vampire identity a secret while the Joker is constantly probing for more information about her.
Well, it could be a story about family secrets. Maybe Bella has just discovered that Billy is her father and she has to deal with the shock of this new information while also getting to know Billy and his side of the family.
In a 'bella is thor's daughter fanfiction', the plot could involve Bella being whisked away to Asgard. There, she has to learn about her father Thor and the ways of the Asgardians. She might get into trouble with the other Asgardians who are skeptical of her because she's from a different place. But as she proves herself, she could form alliances and help Thor in some great battle or quest, all while coming to terms with her new identity.
One possible plot could be Bella growing up not knowing who her father is. Then, as she discovers her true identity, she has to decide whether to follow in Voldemort's dark footsteps or rebel against him. She might face a lot of internal conflict as she tries to balance her own values with the legacy of her father.
Well, it could be about Damon having to protect Bella from the various threats in their supernatural world. Maybe she has some unique powers that draw unwanted attention.
One possible plot could be Bella growing up in a world filled with the supernatural elements that Rebekah is a part of. Maybe she discovers her powers early on and has to learn to control them while also dealing with the complex family dynamics of being Rebekah's daughter. For example, she might face the expectations of the vampire community that Rebekah is associated with.
Well, it could involve Bella discovering her true heritage as Elijah's daughter. Maybe there are conflicts with other characters who have different intentions regarding her. For example, some might want to use her for power, while she just wants a normal life.