Often, a key element is the power dynamic. Bellatrix is a powerful and dark witch, and Harry has his own unique power. Their interactions in these fanfics play on this power struggle and attraction. For example, in some, Harry might be drawn to Bellatrix's wild and unbridled power, while she is intrigued by his potential.
In a Bellatrix and child Harry Potter fanfic, the author might explore the idea of Bellatrix having a change of heart towards Harry. It could start with her seeing some of James Potter in the young Harry. This could lead to a series of events where she tries to protect Harry from other Death Eaters, which would be a huge deviation from her character in the original series. However, it would make for a very interesting and unique fanfic.
One great Bellatrix fanfic is 'The Redemption of Bellatrix'. It shows a different side of her, exploring the possibility of her having a change of heart. It's really interesting to see how the author weaves a new story around her character.
In a time - travel Bellatrix fanfic, she might go back to the time when she was first introduced to the Dark Arts. This could show a different side of her, perhaps a more innocent - looking but still dark - inclined Bellatrix. She could interact with younger versions of other Death Eaters and form different alliances that change the course of the future in the wizarding world.
One great 'Harry Potter x Bellatrix fanfic' is 'The Unlikely Bond'. It explores a very different relationship dynamic between Harry and Bellatrix. It shows how Harry, in this fictional scenario, tries to understand Bellatrix's twisted mind and in the process, they develop a strange connection that is full of tension and mystery.
The lemon could be a key ingredient in a potion. Bellatrix, being a dark witch, might be brewing a powerful and dangerous potion where the lemon is an unexpected but crucial part. It could have properties that interact with dark magic in an unforeseen way.
In some fanfictions, the lemon could be used as a metaphor for something in Bellatrix's life. For instance, it could represent something sour or bitter in her past that she is constantly trying to overcome while still being her menacing self in the world of Harry Potter. Writers often use such symbols to add depth to characters, and Bellatrix is a character with a lot of potential for this kind of exploration.
No. It goes against the general moral and ethical themes of the 'Harry Potter' series. The relationship between Harry and Bellatrix is one of enmity, and such a plot is very disturbing and inappropriate.
In writing this fanfic, dialogue is crucial. Bellatrix has a distinct way of speaking, often with a manic and cruel edge. Harry, as a child, would be more innocent yet determined. Their conversations should reflect their personalities. Also, consider the impact of other characters. How would Dumbledore react if he found out Bellatrix was involved with Harry? Incorporating these elements will make the fanfic feel more like a legitimate part of the Harry Potter universe.
Good Bellatrix fanfics often have unique plotlines. Maybe she has a secret mission that goes against Voldemort's orders, or she has a relationship with another character that changes her perspective. Fanfics that make her a more complex character, rather than just a crazy villain, are the ones that stand out. For instance, if she has a moral dilemma that makes the reader think about her in a new light.