Since I don't have a large sample of 'buttercup pregnant fanfic' to analyze, it's hard to say for sure. But common themes in pregnancy - related fanfic might include the character's emotions about the pregnancy, how it affects relationships, and the anticipation of new life.
Another option is that it could be a character that she's been friends with for a long time. Their relationship could have slowly evolved into something more, and one thing led to another, resulting in the pregnancy. This would add an interesting layer of complexity to their friendship - turned - relationship dynamic.
Well, one possible plot could be that Butch Buttercup discovers she is pregnant unexpectedly. Maybe she has to deal with the shock of it at first, then figure out how to tell her friends or family. She could face challenges like deciding whether to keep the baby or not, and how it would impact her life and relationships.
The main characters are obviously Buttercup and Butch. Buttercup is often portrayed as a tough and feisty character, and in this fanfic, she would be dealing with the new situation of pregnancy. Butch, on the other hand, is likely to be shown as having to step up and be more responsible.
Perhaps in the fanfic, Buttercup and Butch are part of a post - apocalyptic world. They end up together in a survival situation and Buttercup becomes pregnant. They then have to fight off threats while also preparing for the baby. Their relationship might be a source of strength in this harsh world, and they have to figure out how to provide for the new life in such difficult circumstances.
I'm sorry, I'm not aware of specific 'buttercup pregnant fanfic' stories. You could try searching on some popular fanfic websites like Archive of Our Own.
One common theme could be the changes in Buttercup's character due to pregnancy, like becoming more protective or vulnerable. Another might be the reactions of the other characters in the story towards her pregnancy.
The plot should be engaging. It could include elements of drama, like if there are any threats to the pregnancy or their relationship during this time. Also, some heartwarming moments such as when they first feel the baby kick would make it great.
I'm not sure of specific 'buttercup pregnant fanfiction' stories offhand. You could try searching on fanfiction platforms like Archive of Our Own or FanFiction.net. They have a vast collection of fan - created works and you might find what you're looking for there.