Well, a big trope is the 'daylight protection' one. If Kara is a vampire, she has to avoid sunlight, and Lena might be the one to help her find ways to do that. There's also the 'vampire society' trope. The fanfiction could explore how Kara fits into the vampire world, if there are rules and hierarchies. And the 'moral dilemma' trope is often present. For example, if Kara has to feed on blood to survive, Lena might struggle with her own morals regarding helping Kara or stopping her.
In Kara and Lena vampire fanfiction, a common trope is the power struggle. Vampires usually have superhuman powers. So, if Kara is a vampire, she might struggle with controlling her new powers, and Lena could be the one to help her. Another trope is the immortality factor. If Lena is a human in the story, the idea of Kara's immortality creates a sense of longing and melancholy. And of course, the 'blood bond' trope where the sharing of blood between them has a special significance.
A common trope is the 'enemies to lovers' arc. At first, Lena might be a bit suspicious of Kara or vice versa, especially considering Lena's family history and Kara's secret identity. But as the story progresses, they see past their initial differences and fall in love. Also, the 'love triangle' trope can be found, although not as often. Maybe there's a third character who has feelings for either Lena or Kara, which adds some drama and tension to the relationship. And the 'found family' aspect is important too. Their relationship is not just about romantic love but also about building a family - a support system where they can be themselves and rely on each other.
One popular Kara and Lena fanfiction could be 'A New Beginning'. It focuses on their relationship evolving in a post - apocalyptic world. They have to rely on each other and in the process, their bond deepens.
One common trope is the 'forbidden love' aspect. A vampire might fall in love with a human, and their need to drink blood creates a lot of tension in the relationship. Another is the 'vampire society' trope, where the story delves into the politics and hierarchies among vampires. Also, the 'vampire hunter' trope is popular, adding an element of danger and conflict as the hunter tries to stop the vampire from drinking blood.
One popular theme is the two characters being sorted into different Hogwarts houses and how that affects their relationship. For example, Kara might be in Gryffindor and Lena in Slytherin, creating a dynamic of 'opposites attract'. Another theme is them using their powers (Kara's superpowers and Lena's intelligence) to solve mysteries within the wizarding world.
One popular trope is the 'forbidden love' aspect. Since vampires are often seen as dangerous and different from humans in these fanfictions, the relationship between a vampire and a human is considered taboo. Another trope could be the 'protective vampire'. The vampire may feel the need to protect the human from other threats in the supernatural world. Also, the 'transformation dilemma' is common, where the human may be faced with the choice of becoming a vampire to be with their lover or staying human and facing the challenges of a short lifespan compared to the vampire.
I'm not sure of specific names off the top of my head, but you can often find great authors on popular fanfiction websites. Look for those with high ratings and a lot of reviews. Usually, the ones who have a deep understanding of both the Kara and Lena characters and the vampire lore are the best.
One popular theme is friendship - to - lovers. It often shows the journey of Kara and Lena starting as friends and gradually developing deeper feelings for each other. It's a really sweet and relatable theme for many fans.
A popular theme is the discovery of their true selves. In some fanfictions, Lena and Kara are on a journey of self - discovery, and their relationship helps them in that process. There are also stories that focus on the theme of sacrifice. They might be in a situation where one has to sacrifice something for the other, which shows the strength of their connection. Love, both platonic and romantic, is also a common theme that runs through a lot of lena and kara fanfiction. It could be a slow - burn love story or a story about the unbreakable bond of friendship that has elements of love.
The characters themselves are very well - developed in the original show. So, when it comes to fanfiction, fans want to see more of their personal growth, their relationship development, and how they handle different situations. There's also the aspect of the shipping community. Many fans ship Lena and Kara, and fanfiction is a great way to explore that relationship in different ways.
The popularity of Kara Danvers and Lena Luthor fanfiction lies in the complex relationship between the two characters in the source material. Their dynamic, which is a mix of friendship, trust issues, and underlying romantic tension, gives fanfic writers a lot to work with.