He would probably become more vulnerable. Usually, Angel Dust is portrayed as confident and brash, but pregnancy could make him more cautious as he has to think about the life growing inside him.
His relationships would change. For example, his friends at the hotel might start to see him in a new light. Some might be more protective of him, while others might be judgmental. And his relationship with Alastor could take an interesting turn, as Alastor might be amused or intrigued by this new development.
She might become more vulnerable. Pregnancy often brings out a softer side in people, and Lucifer, despite being a powerful figure, would likely be no exception. Her focus would shift from solely ruling Hell to also thinking about the future of her unborn child.
One possible plot idea could be that Angel Dust discovers he's pregnant and has to deal with the shock and confusion. He might struggle with how the other characters in Hazbin Hotel will react, especially considering his past and his reputation. Maybe he tries to hide it at first but then realizes he needs support.
One interesting fanfiction could be about Angel Dust's backstory before arriving at the Hazbin Hotel. It might explore his life in Hell and how he got involved in certain activities. Another could be a story where Angel Dust forms an unlikely friendship with one of the other hotel residents, like Charlie. And there could also be a fanfiction that focuses on Angel Dust's attempts to redeem himself in a really unique and unexpected way.
There's a fanfiction where Angel Dust time - travels back to a crucial moment in his past. This gives him the chance to change a major decision that led him to his current situation in Hell. It's unique because it plays with the concept of fate and self - discovery in a really interesting way.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3). Just search for 'hazbin hotel alastor x angel dust' in the search bar, and it'll show you a whole list of relevant fanfictions. There are different filters you can use too, like by rating or length.
There's also 'Redemption's Path'. In this fanfiction, Angel Dust is on a journey to redeem himself, and Alastor plays a somewhat unexpected role in guiding him. It delves deep into their backstories and how those shape their relationship in the present. It's really interesting as it shows a different side of both characters.
He would probably become more solemn. Naruto is usually a very energetic and cheerful character, but as the Angel of Death, he would have to carry the weight of deciding who lives and who dies. This would make him more reserved and less likely to joke around.
If the fanfiction was illustrated, the artist could choose to blend the two styles in different ways. Maybe the background of Hell would be drawn in the detailed and somewhat grotesque style of Hazbin Hotel, while the Miraculous Ladybug characters would retain their smooth lines and bright colors. When they interact, the art style could create a sense of otherworldliness, like two different worlds colliding visually.
One common theme is friendship. Fans often explore the relationships between Angel Dust and other characters in the Hazbin Hotel universe. For example, his interactions with Charlie, the princess of Hell, can be a source of interesting stories, whether it's about them teaming up for a project in the hotel or just having a friendly chat over drinks.
It also keeps the interest alive during the wait for new official content. When there's a long gap between new episodes or developments in the official Hazbin Hotel story, these fanfictions give fans something to enjoy. They can explore new storylines and ideas that are inspired by the original but still have their own unique twists, like a fanfic where the characters react to a time - travel scenario.