The theme of transformation is possible. Bellatrix and Rodolphus are known for their dark and often cruel ways. The pregnancy could be a catalyst for them to transform into more caring and protective individuals. Additionally, the theme of secrecy might play a role. They might need to keep the pregnancy a secret from some of their enemies or even some of their fellow Death Eaters who could see it as a weakness.
Maybe the fanfic often misrepresents the nature or relationship of Bellatrix and Rodolphus. For example, if in the original they are portrayed as very dark and loyal to a certain cause, but fanfic makes them out to be something else entirely, like soft or good - hearted, it could lead to dislike. Also, some people who are die - hard fans of the official story just don't like the idea of others taking creative liberties with their beloved characters.
One common theme is loyalty. Since they are both Death Eaters, their loyalty to Voldemort and to each other is often explored. For example, in many fanfictions, they will go to great lengths to protect each other in the name of their shared cause.
One common theme is their loyalty to Lord Voldemort. Fanfics often explore how their allegiance to the Dark Lord affects their relationship with each other. For example, they might have to make sacrifices in their marriage for the sake of serving Voldemort.
One plot idea could be exploring how the wizarding community reacts to the news. Maybe there are rumors and speculations about the future of their family in the dark wizarding world. Another could be Bellatrix's internal struggle with her new role as a soon - to - be mother while still being a devoted follower of Voldemort.
I'm not sure if there is such a specific fanfiction. It's a rather unusual and dark concept considering Bellatrix's loyalty to Voldemort and her actions in the original story. Fanfiction can be very diverse, but this would likely be a very niche and perhaps controversial take on the Harry Potter universe.
One common theme is redemption. Given her parents' dark past, many fanfics explore whether their daughter can redeem the family name. Another theme is identity. She has to figure out who she is in relation to her infamous parents.
One key element is the exploration of their loyalty to Voldemort. Their actions as Death Eaters are often central. For example, in many fanfics, they are shown carrying out his orders together.
I'm not sure if there is such a specific fanfiction. Fanfiction can cover a vast range of wild and creative ideas, but this one seems rather unusual. It goes against the original lore in many ways. In the original 'Harry Potter' series, Harry is James and Lily's son, and Bellatrix is a Death Eater who has a completely different story arc.
It would be extremely strange. Harry is known for his connection to the light side, while Bellatrix is one of the darkest characters. If he were their son, perhaps he would struggle with his own identity. He might have been raised in a very different environment, surrounded by Death Eaters, but still have some innate goodness in him that would cause internal conflict.
One great Bellatrix Black and Rodolphus Lestrange fanfiction is 'The Dark Bond'. It delves deep into their relationship within the dark wizarding world. It shows how their loyalty to Voldemort intertwined with their relationship to each other. The story is full of dark magic elements and complex character interactions.