Well, a plot could involve Adam being sent on a mission by some other powerful entity in Hell to infiltrate the Hazbin Hotel and disrupt Charlie's plans. However, he ends up falling for Charlie and has an internal struggle between his loyalty to his original mission and his newfound feelings. Or perhaps Adam has a special power that Charlie needs to help with a big event at the hotel, like a demon - friendly concert, and they have to work together closely to make it a success.
A possible plot is that Adam is a lost soul who has forgotten his past. Charlie, with her kind heart, takes him in at the hotel. As time passes, Adam starts to remember bits and pieces of his past, and it turns out he was once a key figure in a great war in Hell. His memories start to cause chaos at the hotel as some demons fear his return to power, while Charlie tries to help him come to terms with his past and use his newfound knowledge to help the hotel's cause.
Perhaps Adam has a special power that could either help or hinder Charlie's plans for the hotel. They could go on an adventure together to find a way to use his power for good. Along the way, they face various challenges that force them to rely on each other. This shared experience brings them closer and they start to fall in love as they realize how much they mean to one another.
One plot idea could be Lucifer seeing a different side of Adam that no one else has. Maybe Adam shows kindness towards a lower - class demon, which makes Lucifer question his own views. Another could be that they team up to solve a mystery in Hell that threatens both the sinners and the native demons. And a third idea is that Adam tries to introduce Lucifer to more 'human' concepts like forgiveness, which Lucifer initially resists but gradually comes to understand.
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.
A possible plot for Hazbin Hotel Alastor x Charlie fanfiction is that there is a new threat to the hotel, a powerful demon who wants to shut it down. Alastor and Charlie must put aside their differences and work together to stop this threat. Alastor could use his radio - based powers to gather information and Charlie could use her charm to convince other demons to help them. Along the way, they might start to develop deeper feelings for each other as they see sides of each other they hadn't noticed before. Another idea is that Charlie tries to teach Alastor about modern technology and it leads to some really funny and endearing moments between them, all while they are also dealing with the day - to - day operations of the hotel.
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.
In Hazbin Hotel Charlie x OC fanfiction, the OC can bring fresh perspectives. Charlie is often associated with her mission to redeem sinners in Hell. An OC might challenge this idea or support it in unexpected ways. The OC could be a demon who has a more cynical view of redemption, which could create tension. On the other hand, they could also be an angel - like figure in Hell (even if that's an oxymoron in the context) who helps Charlie see new ways to approach her goal. Moreover, the fanfiction can play with different art styles if it's accompanied by illustrations. Some may depict Charlie and the OC in a more cartoonish style similar to the original Hazbin Hotel art, while others might go for a darker, more detailed aesthetic.
Their relationship could develop uniquely if Adam starts to teach Charlie about the darker aspects of Hell that she may be overlooking in her pursuit of redemption. In return, Charlie could show Adam the beauty in hope and second chances. For example, Adam might introduce Charlie to some of the rougher demons who he thinks could be redeemed, and Charlie could then show Adam how to approach them in a non - threatening way.
One idea could be an OC who is a fallen angel trying to redeem themselves in the Hazbin Hotel. They could face challenges from both the sinners and the hotel staff, adding an interesting dynamic.
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.