Another interesting concept could be a fanfiction set in an alternate universe where Lucifer and Michael were friends from the start. They go on adventures together across different dimensions, facing various challenges. This would be a complete departure from their traditional adversarial relationship in the show.
One idea could be a fanfiction where Lucifer and Michael are forced to team up against a new, greater threat. Maybe an ancient evil that even their father couldn't have foreseen. They start off hating each other but as they fight side by side, they begin to understand each other's perspectives a bit more.
One idea could be that they have to team up against a common enemy in the fanfiction world. Since they are mates, their combined powers would be extraordinary. They might start to understand each other's motives better through this shared experience, and it could lead to a deeper bond between them.
One interesting plotline could be their eternal struggle for power in a new, alternate universe created within the fanfiction. They might fight not just physically but also in the realm of manipulating other characters' loyalties.
One of the popular pairings is Michael/Lucifer themselves. Their complex relationship, being brothers and eternal rivals, lends itself well to shipping in fanfiction. Writers like to explore the dynamic of their love - hate relationship in a romantic or at least very intense emotional context.
One idea could be that Lucifer from 'Lucifer' ends up in the 'Supernatural' universe and teams up with the Winchester brothers to fight a common enemy, like a powerful demon that's causing chaos in both their worlds. Maybe he uses his charm and powers in a unique way to help them out.
Some fanfictions play with the idea of an alternate universe where Lucifer and Michael have different roles. Maybe Lucifer is the one trying to maintain order and Michael is the rebel. There are also plotlines that explore their backstories in more depth, like their relationship with their father, God. This can add a whole new layer of complexity to their characters. Additionally, love interests can be introduced for them in fanfictions, which can change the dynamics of their relationships and the overall plot.
One plot idea could be that the reader, an angel, is sent on a mission to redeem Lucifer. Along the way, they have many intense philosophical debates about good and evil, which gradually lead to an unexpected bond between them.
One idea could be that Lucifer from 'Lucifer' enters the world of 'Supernatural'. Maybe he teams up with the Winchester brothers to fight a common enemy, like a new type of demon that is causing chaos in both their realms. He could use his devilish charm and powers in a way that the Winchesters are both skeptical and intrigued by.
There are many interesting fanfictions that combine elements from 'Harry Potter' and 'Supernatural' with a character named Michael. Some fanfictions might have Michael from 'Supernatural' end up in the 'Harry Potter' universe. He could interact with the wizards and witches, perhaps using his angelic powers in a world full of magic spells. It could lead to some really unique storylines, like him teaming up with Harry Potter to fight against a common enemy, such as dark wizards who are dabbling in forces they don't understand, which are similar to the demons in 'Supernatural'.
A possible fanfiction idea is that the dog is a reincarnation of an ancient being that has a connection to both Lucifer and Crowley. In the past, this being was involved in a great battle between good and evil. Now, as a dog, it has no memory of its past. Lucifer wants to use the dog to regain his former glory, while Crowley wants to keep the dog away from Lucifer to maintain the balance of power. The story could follow the dog's journey as it discovers its true identity and has to make a choice between the two powerful forces.
Well, for one, fans of Supernatural are always interested in exploring different aspects of the characters' relationships. Michael and Lucifer have a long - standing and complex history in the show. Fanfiction about them as mates allows fans to delve deeper into their connection, imagining how their personalities could interact on a more intimate level. It also gives writers a chance to play with the Supernatural lore and create new and exciting stories that might not be possible in the main show. For example, they can explore how the angelic hierarchies might react to such an unorthodox relationship.