A possible plot for Supergirl Dark Kara fanfiction is that a time - traveling villain goes back in time and changes the events that made Kara into the hero she is. This results in Kara growing up with a different set of values and becoming Dark Kara from the start. She then sets out to change the world according to her new, darker vision. This could involve her taking over the media to spread her own brand of 'truth', which is really a form of mind control. Her friends in the present time have to figure out a way to go back in time as well and fix the changes that were made to restore Kara to her heroic self.
One idea could be Kara struggling with her dark side as she is exposed to a new form of kryptonite. This kryptonite doesn't just weaken her physically but also affects her mental state, making her more aggressive and less likely to follow her usual moral code. Another plot could involve Dark Kara teaming up with an unexpected villain from another universe, creating chaos across multiple dimensions. And perhaps she starts to question her own identity, whether she is truly the hero she thought she was or if this new dark self is her real nature.
One idea could be a dark Supergirl who is corrupted by a powerful, evil force from outer space. She starts using her powers for her own gain, causing chaos in Metropolis. Another could be a Supergirl who has lost faith in humanity due to some great betrayal and turns to a darker path to 'teach' humans a lesson. And a third idea might be a Supergirl from an alternate, darker universe where her powers are more unstable and she has to constantly battle her inner demons.
There could be a plot where the kiss is a moment of confusion for both Kara and Lena at first. But then they start to have dreams about each other that reveal their hidden desires. They then decide to explore their relationship further. Along the way, they might discover that their combined powers, not just Kara's superpowers but also Lena's intelligence and skills, can be used to create a new form of energy that could save the world. But they also have to deal with their own insecurities and the expectations of others.
One interesting storyline could be Kara adjusting to life on Earth as a young girl. Maybe she's trying to hide her powers while also making friends at school. Another could be her learning about her Kryptonian heritage in a more personal way, like finding a hidden family heirloom that gives her new insights.
The new perspectives. An OC (original character) can bring in fresh ideas and storylines. For instance, an OC could have a unique power that changes the dynamics in the Supergirl world.
Another idea is Kara getting separated from Alice and Connor during their journey to freedom. She then has to rely on her own wits and the kindness of some humans she meets along the way. This could lead to her having to make difficult decisions, like whether to trust a human who seems friendly but might be leading her into a trap. It would be a great exploration of her character's growth and her ability to adapt in tough situations.
Another plot could be set in an alternate universe where Supergirl lands in a world that has no concept of superheroes. She has to learn how to fit in while also trying to figure out how to use her powers without causing chaos. The fanfiction could explore her journey of self - discovery in this new world.
Perhaps in the fanfiction, Supergirl is drawn to the Naruto world because of a strange energy signal similar to Kryptonite. Once there, she teams up with Sasuke who is initially distrustful but comes to respect her. They go on a quest to find the source of this energy. Along the way, Supergirl discovers that the energy is actually a by - product of an ancient and powerful jutsu. This jutsu was sealed away long ago, and now it's starting to leak, threatening both the Naruto world and potentially Supergirl's home planet if it spreads.
A plot could involve a time - travel scenario where Batman and Supergirl are sent back in time to prevent a major event that would change the future of both their worlds. They would have to work together, using their different skills and knowledge of their respective eras.
Lex Luthor could be her main antagonist. He might see Dark Kara as a threat to his own plans of world domination. He could try to manipulate her into doing his bidding or, if that fails, find ways to destroy her. Another option is Brainiac. Brainiac might be interested in studying Dark Kara's new form and powers, and in the process, they could end up in a battle as Kara resists being his experiment.
Well, obviously Kara herself is a common character. Then there's often her adoptive family, like the Danvers. Alex Danvers, her sister, is frequently in these fanfictions. They usually have a strong bond that's explored further. Also, Clark Kent might make an appearance. Since he's also from Krypton, he can act as a mentor or a source of information for Kara about their home planet.