What are some interesting plot ideas for Hazbin Hotel OC fanfiction?

One idea could be exploring Lucifer's past before the events of Hazbin Hotel. Maybe show his rise to power and the decisions that led him to become the ruler of Hell. Another could be a story where Lucifer has to deal with a new, powerful demon who challenges his authority in Hell. A third idea might be a fanfiction that focuses on Lucifer's relationships with the other main characters in a more in - depth way, like his true feelings towards Charlie and how he views her plan for the hotel.

One idea could be that God decides to visit the Hazbin Hotel to see if there's any hope for redemption among the demons. He could interact with Charlie and the other characters, causing them to question their beliefs and actions. Another could be a story where God sends an angel to the hotel undercover to observe and report back, and the angel ends up befriending some of the demons, blurring the lines between good and evil.

One idea could be Adam's backstory exploration. Maybe he had a different life before coming to the Hazbin Hotel universe and that could be delved into. For example, his family, his upbringing, and how those things might have shaped his current self.

Well, a plot idea could be that Alastor discovers a new power within himself in the context of a fanfiction. This new power could either help or hinder his standing in Hell. Also, perhaps a plot where Alastor tries to start his own 'radio show' in Hell that's different from his usual broadcasts, and it causes all kinds of uproar among the demons. Or, what if Alastor is forced to team up with someone he really dislikes, like Vox, to face a common threat to their power in Hell?

You could also write a fanfiction about a new character arriving at the Hazbin Hotel. This new character could have a unique power or a very different personality from the existing ones, which would create all sorts of new interactions and storylines. Maybe they have a special ability to see the pasts of the other characters and use that to help them on their path to redemption.

One idea could be exploring the backstories of the characters in more depth. For example, delving into how Alastor became the Radio Demon. Another could be creating a new character who arrives at the hotel and causes a stir among the existing residents. Maybe a character from a different dimension or with a very unique power.

One idea could be a human who ended up in Hell due to a deal gone wrong with a demon on Earth. They have to navigate the strange and dangerous world of Hazbin Hotel while trying to find a way to reverse their fate. Maybe they team up with some of the hotel's residents who see an opportunity in their unique situation.

One idea could be that Adam and Eve end up in Hell and have to adapt to the chaotic and sinful environment of Hazbin Hotel. They could meet the main characters and get involved in their schemes to rehabilitate sinners.

One idea could be that Lucifer decides to test Charlie's determination to redeem sinners in a series of extreme challenges. He might create artificial situations where it seems impossible for a sinner to be redeemed, just to see if Charlie will stick to her beliefs.

One idea could be that the characters from Hazbin Hotel end up in the wizarding world of Harry Potter. Charlie could try to reform some of the dark wizards using her methods from the hotel. For example, she might see Voldemort as a 'lost soul' and attempt to rehabilitate him, which would create a really unique dynamic as the other Hogwarts characters react to her unorthodox approach.