One idea could be a story where Lucifer and Alastor have to team up to deal with a new threat to Hell. Maybe a powerful demon from another realm is trying to take over, and they have to put aside their differences. They could start off not trusting each other much, but as they face challenges together, they begin to respect one another's abilities.
In Hazbin Hotel fanfiction with Alastor x Reader, Alastor is often depicted as a complex character. He's charming yet menacing. His radio - themed appearance and mannerisms add to his allure. He's a powerful demon, and in these fanfictions, his relationship with the reader can range from a dangerous flirtation to a more protective bond.
I really liked 'Alastor's Unlikely Alliance'. In this fanfic, Alastor forms an alliance with a rather unexpected character. It has a great plot that keeps you hooked from start to finish. The character development, especially for Alastor, is really well - done.
I think Niffty would be an interesting character to pair with Alastor. Niffty is always cleaning and being hyper - active, and Alastor could either find this endearing or extremely annoying. Their dynamic could be quite comical. Also, Husk could be paired with Alastor. Husk is a grumpy alcoholic and Alastor's attempts to either annoy him further or get him to do something useful could lead to some engaging storylines.
Well, themes like self - discovery are often present. When Alastor is hurt, he has to reevaluate who he is and what his place is in Hell. There's also the theme of friendship or lack thereof. Some fanfictions explore how other characters either support or abandon him when he's in pain. And of course, there's the overarching theme of pain itself, both physical and emotional, and how Alastor copes with it. It can be through denial, anger, or acceptance, depending on the story.
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.
One common theme is the power dynamic. Alastor being a powerful demon and the reader usually being a more ordinary (by Hell's standards) character. Another is the idea of redemption. Maybe the reader tries to 'redeem' Alastor in some way. Also, there's often a theme of mystery, as Alastor has many secrets.
Another theme is redemption itself. Charlie is always trying to redeem sinners in Hazbin Hotel, and in the fanfics, Alastor's character can be a part of that journey. Maybe she tries to redeem him, or he helps her in her mission in unexpected ways.
You can start by looking on Archive of Our Own (AO3). It has a large collection of Hazbin Hotel fanfics, including many focused on Alastor. The tagging system there makes it easy to filter and find exactly what you're looking for.
The fanfic about Angel Dust x Alastor in Hazbin Hotel can be really interesting. Usually, the character of Angel Dust brings a sense of chaos and fun, while Alastor is more about order and power in his own way. Their interactions can range from hilarious to tense. In some fanfics, they could start off as enemies but gradually develop an understanding. It's like two opposing forces trying to co - exist in the strange world of Hazbin Hotel.