In this type of fanfiction, a powerless Lucifer might start to experience emotions in a more raw and human way. Without his powers, he's no longer the all - powerful being. He could become a target for his former enemies who see this as an opportunity for revenge. This could lead to a series of adventures where he has to rely on his wits rather than his strength. He might also start to question his own identity and purpose, which were so closely tied to his power before.
Another plot could be that he is captured by a group of hunters who plan to keep him powerless. They try to use him as a bargaining chip with other demons or angels. But Lucifer, being clever even without his powers, tries to turn the situation around and manipulate the hunters to his advantage.
A powerless Lucifer could survive among humans by using his charm and intelligence. He's been around for a long time and has a lot of knowledge. He could use that to blend in and perhaps find some humans who are willing to protect him out of pity or curiosity.
If in a Supernatural fanfiction Lucifer becomes powerless among humans, first of all, his entire view of the world would change. He has always been at the top of the power hierarchy, looking down on humans. But now, he's in their shoes. He'd likely be in a state of shock initially. Then, he might try to find a way to regain his power. But in the process, he could form unexpected alliances with humans. Some might see him as a fallen being in need of help, while others would be out to take advantage of his weakened state.
One idea could be that Lucifer has his powers stripped by a powerful spell cast by a group of witches. As a result, he's in a vulnerable state and some other characters, perhaps angels who have a bone to pick with him, decide to teach him a lesson in a rather unorthodox way like spanking. It could be a humorous take on the usually intimidating Lucifer.
It could start with Lucifer waking up in a strange place, realizing his powers are gone. Then, he's immediately confronted by a character who has long hated him. This character decides to take advantage of his powerless state and starts the spanking as a form of revenge. For example, it could be a demon who was once under Lucifer's thumb but now has the upper hand.
A popular 'Supernatural Lucifer fanfiction' is 'Lucifer Among the Winchesters'. In this one, Lucifer interacts with Sam and Dean in a series of events that are both humorous and full of tension. It plays with the established dynamics of the show and adds its own unique twists to the story, making it a must - read for fans of the Lucifer character in Supernatural.
Not really. Given that he is a character who is interested in the affairs of the Supernatural world, fanfiction can be an extension of that world. It's just another way for him to engage with the story and the characters.
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.
In fanfiction, Lucifer's wings are often depicted in very interesting ways. They can be a symbol of his power and fallen status. Some fanfictions might describe them as black and tattered, representing his fall from grace. Writers may use the wings to show his intimidating presence when he makes an appearance.