One interesting character could be a self - made female demon who defied the normal ways of becoming a demon in the fanfiction. She might have her own unique powers and a very different view of the demon world compared to the traditional demons. Another could be a female demon who has a soft spot for a particular human, which is quite against the nature of demons in general. This internal conflict makes her character really interesting.
In some Black Butler female demon fanfiction, there could be a female demon who was once a human. Her transformation into a demon and her struggle to come to terms with her new identity can be really fascinating. She might still retain some of her human emotions and values, which put her at odds with the other demons. Another interesting character could be a female demon with the ability to manipulate time. This power makes her a very powerful and unpredictable character in the fanfiction, and her actions and decisions often drive the plot forward.
One popular theme is the power struggle. Female demons in Black Butler often have their own agendas and powers, and the stories might explore how they vie for control or influence in the dark underworld. Another theme could be redemption. Despite being demons, some fanfictions may focus on a female demon's journey towards redemption or a change of heart. Also, the theme of forbidden love is quite common, perhaps a female demon falling in love with a human or a character on the side of good, which creates a lot of conflict and drama.
One idea could be a fanfiction where Ciel and the demon, instead of their usual master - servant relationship, become allies in a different realm. They could be on a quest to save a parallel world that is being threatened by a powerful dark force. Another idea is a story where the demon has to protect Ciel from a group of rogue demons who see Ciel as a valuable asset due to his connection with the underworld. Maybe in this fanfiction, Ciel discovers a new power within himself that the demon has to help him control.
One idea could be to create a demon OC who was once a human with a tragic past, like a wronged artist. The OC could have unique demonic powers related to art, such as being able to bring paintings to life in a twisted way. Another idea is a demon OC that is an outcast among demons because they have a sense of morality that is different from the norm in the demon world. They could befriend Ciel in an unexpected way and help him not just for the soul contract but out of genuine care.
One idea could be Ciel exploring his new demonic powers. He might start to see the world in a completely different way, with his values shifting as he is no longer bound by human limitations. For example, he could use his powers to seek revenge in a more extreme way than he could as a human.
A really interesting character is Lyra from a certain fanfiction. She's not just a brute force demon hunter. She uses her intelligence to outwit demons. For example, she often sets traps using her knowledge of demon behavior. Her relationships with other characters, especially her mentor, add depth to her character.
One great 'Black Butler Demon Reaper Fanfiction' is 'The Reaper's Bond'. It delves deep into the relationship between the demon and the reaper in a very interesting way. The story has a unique plot that shows how they might interact beyond what we see in the original series. The characters are well - developed and their dialogues are engaging.
One common theme is the exploration of Ciel's relationship with Sebastian as a demon. How their contract changes and how Ciel adapts to his new demonic nature. Another theme is Ciel's struggle for power in the underworld, as he is now a demon. It often involves him facing other powerful demons.
A character like Severus Snape could be an interesting choice. He already has that mysterious and somewhat dark aura about him. Transforming him into a demon butler would add an extra layer of complexity to his character, and his relationship with Harry could be re - imagined in a whole new way.
One popular theme is the complex relationship between Ciel and Sebastian. It often explores the power dynamics, with Sebastian being a demon bound to serve Ciel. Another theme is the dark and mysterious world they inhabit. Many fanfictions delve into the supernatural elements of the Black Butler universe, like the existence of other demons and their motives. Also, the idea of Ciel's revenge and how Sebastian aids him in that quest is a common theme. It shows how their goals are intertwined despite their very different natures.
A 'Black Butler Demon Revealed Fanfic' might explore the true nature of the demons in the Black Butler universe. It could delve into how the revelation of their demon forms or identities impacts the story's plot and other characters. For example, it may show how other characters react to the discovery of a character's demonic nature, whether with fear, curiosity, or a desire to use it for their own ends.