Another plot might involve a romantic sub - plot between two unlikely characters in the Hazbin Hotel universe. For example, a demon who is usually seen as a loner might find love with a more outgoing character. This could lead to a series of comical and heart - warming situations as they learn to understand each other.
Perhaps a fanfiction where an exterminator has a secret past related to the underworld of Hazbin Hotel. He could be trying to hide this while still carrying out his duties, and then there are all sorts of complications when certain characters start to suspect him.
A plot could also revolve around Lute using his music to try and rehabilitate some of the more difficult sinners in the hotel. His music has a special power that can soothe or inspire change, and he tries to use it to make the hotel a better place for everyone.
One interesting plot could be the male reader being a new arrival in Hell and getting involved with the chaos at the Hazbin Hotel. Maybe he has a special power that catches the attention of Charlie and the gang. For example, he might be able to see the true forms of the demons, which is both a blessing and a curse as it reveals some terrifying secrets 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.
In 'human in hazbin hotel fanfiction', one interesting concept is the human's impact on the existing power structures in the Hazbin Hotel. Since the hotel is mainly populated by demons, a human's presence can disrupt the status quo. They might introduce new ideas about forgiveness and second chances that are different from what the demons are used to. For example, they could try to convince some of the more cynical demons that there is a better way than just living in eternal damnation. Also, the human's perception of the afterlife as depicted in the Hazbin Hotel world can be a source of exploration. They might be horrified at first by the idea of sinners being punished in such extreme ways, and this could drive their actions to try and change things. And the human could also be a catalyst for character development among the demons, as they interact and learn from each other.
One interesting aspect is the different interpretations of the characters' reactions. In the fanfiction, characters from Hazbin Hotel might react to various situations in ways that the original show hasn't explored yet. For example, how they would react to modern human culture or other fictional universes.
One idea could be exploring Lucifer's past before ruling Hell in the Hazbin Hotel universe. Maybe his rise to power, his relationships with other powerful entities at that time.
Another option is a crossover with Gravity Falls. Dipper and Mabel could end up in Hell for some wild reason, like following a strange portal. They'd meet the Hazbin Hotel crew and chaos would ensue. Dipper would be all about trying to figure out the logic and secrets of this new place, while Mabel would probably befriend some of the more outlandish demons or sinners. Charlie would see the Pines twins as a chance to prove that redemption is possible even for those from other dimensions.
There are fanfictions that focus on Alastor's relationships. For example, a story might explore a friendship or rivalry with Angel Dust. It could show how their different personalities clash or complement each other. Some fanfictions also like to put Alastor in situations where he has to face his own morality, even though he's a demon, and how he navigates those complex emotions within the context of the Hazbin Hotel world.