A common theme is the exploration of their different personalities coming together. Butch is often portrayed as tough and Buttercup as strong - willed, so their relationship can be about two forces colliding in an interesting way.
Adventure - themed fanfictions are also common. Since they are likely from a world with action and adventure, their relationship can be developed while they are on some sort of mission or facing a common enemy. This not only shows their teamwork but also how their feelings for each other can grow in the midst of chaos and danger.
One common theme is the exploration of their different personalities. Buttercup is tough and feisty, while Butch has his own charm. Their clashing and then coming together is often explored.
A lot of the fanfiction might have the theme of growth. As they interact, both Buttercup and Butch could grow as characters. For example, Buttercup might learn to be more patient with Butch's wild ways, and Butch could become more responsible because of Buttercup's influence. Another theme could be adventure. They might go on adventures together, facing challenges that test their relationship and their individual strengths.
One common theme is the exploration of opposites attract. Buttercup is often portrayed as strong - willed and feisty, while Butch has his own rough charm. Their relationship development based on these differences is a frequent theme.
One common theme could be the struggle between different natures. Buttercup, perhaps with her own set of characteristics, and the butch vampire with his vampiric nature. There might be a theme of acceptance, like how they come to accept each other despite their differences.
Love is a very common theme. The idea of Butch and Buttercup falling in love despite the vampire aspect, or because of it in some cases. Another theme is the struggle with identity. Buttercup might struggle with her new vampiric identity while Butch has to come to terms with loving someone different.
Transformation is also a common theme. Buttercup might be on the verge of becoming a vampire herself, or she could be trying to resist the allure of the vampire life that Butch represents. This internal struggle can be a major part of the story. And of course, there's the theme of good vs evil. If Butch is a vampire, he may be trying to fight his own vampiric instincts which are often associated with evil, while Buttercup could be the moral compass guiding him.
A frequent theme is the discovery of one's true self. Buttercup might find out new things about herself in relation to Butch's vampire nature, like hidden strengths or fears. And of course, there's the theme of the supernatural world. Fanfictions usually explore the rules of the vampire world, such as their powers, weaknesses, and the hierarchies within it, and how Buttercup and Butch interact with this world.
One common theme could be their unique dynamic as superheroes. Their powers and how they interact during battles or while saving the day might be explored. Another theme could be their personal growth and how they influence each other's development.
One common theme is friendship. Many fanfics explore how Butch and Buttercup can go from being just two characters in the same universe to really good friends or even more. For example, they might start by just tolerating each other during a fight against a common enemy and then slowly realize they have a lot in common.
One common theme is friendship. Since Butch is part of a group, fanfics often explore his friendships and how they evolve. Another theme is self - discovery. Writers like to show Butch learning more about himself and his capabilities.