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.
Power is another big theme. They are part of a powerful and feared group in the wizarding world. Fanfictions might show them vying for more power within the Death Eater ranks or using their combined power to intimidate others. A good example is a fanfic where they take over a wizarding town, using their dark magic and influence to rule it.
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 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.
The theme of redemption can also be present. Some fanfictions might explore if there is any chance for Bellatrix to turn away from the Dark Side, or how Sirius's actions might have an impact on her in some way. This can create a complex and interesting character dynamic, especially considering Bellatrix's deep - seated loyalty to Voldemort.
One common theme is the exploration of good vs. evil within their relationship. Since Sirius is on the side of good and Bellatrix on the side of evil. Another theme could be the idea of forbidden love, as their different loyalties would make a relationship between them extremely difficult in the context of the 'Harry Potter' world.
Power struggles are also quite common. Since he was part of the Death Eaters, fanfictions might depict his OC getting involved in power - related plots within the wizarding world. For instance, there could be a story about his OC trying to gain more power within Voldemort's ranks or even trying to break free from Voldemort's control to pursue their own goals. And, mystery is another theme. Writers might create a mysterious backstory for his OC, like a hidden family connection or a secret ability that gradually unfolds throughout the story.
One common theme is redemption. Many fanfictions explore whether Rodolphus can be redeemed for his actions as a Death Eater. Another theme is his relationship with Bellatrix. Writers often delve into the complex nature of their marriage. Also, his role in the wizarding war and how he might have influenced certain events is a common theme.
One common theme is the struggle between nature and nurture. Since Bellatrix is a dark character, the fanfiction often explores whether the baby will follow in her dark footsteps or break free due to other influences. Another theme is secrecy. The existence of Bellatrix's baby is often a well - guarded secret in these stories.
One common theme is redemption. Often, Rodolphus Lestrange is depicted as having a chance to redeem himself through his interactions with Harry Potter. Another theme is the exploration of the grey areas in the wizarding world. Their relationship blurs the lines between good and bad.
Many fanfics explore the theme of redemption for Bellatrix. They imagine scenarios where she could have turned away from the dark side. Her complex character, with her madness and loyalty, also makes her a great subject for psychological exploration in fanfics.
Power dynamics is a very common theme. Bellatrix is a powerful witch, and the relationship with the reader often involves issues of power and control. Also, forbidden love is a theme that frequently shows up. Given Bellatrix's status as a Death Eater, a relationship with her would be considered taboo in the wizarding world. There's also the theme of self - discovery for the reader as they interact with such a complex character.