Redemption is a common theme. Charlie is all about redeeming sinners in Hell, and an OC can either be a part of that mission or a hindrance. Another theme is self - discovery. The OC, through their interactions with Charlie, may learn more about themselves, their place in Hell, and their own potential for change. And of course, friendship or love can be a theme too, as they build a connection with Charlie.
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.
Another theme is growth. Fanfictions often show Charlie and Vaggie growing both individually and as a couple. For example, Charlie might learn to be more assertive in her relationship while Vaggie might become more open - minded, and these changes are usually related to the challenges they face together in running the hotel or dealing with other demons.
One common theme is redemption. Since Charlie is all about rehabilitating sinners in Hazbin Hotel, often in these fictions, the male reader might be a character who is also in need of redemption, and Charlie helps him on that journey. It's a way to explore the idea of second chances.
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.
One common theme is power dynamics. Alastor being a powerful figure in Hell, when paired with an OC, often leads to exploration of how their different levels of power or influence interact. For example, the OC might be initially intimidated by Alastor's power but then find ways to hold their own.
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.
Common themes may include the exploration of their personalities. Since they are characters from Hazbin Hotel, their unique traits are likely to be delved into. Also, themes of loyalty and trust could be present, as their relationship develops. They might face challenges together that test their bond, which is also a frequently seen theme.
Power and temptation are common themes. Lucifer is a powerful figure, and his interactions with the reader often involve him using his power to either tempt or protect. Another theme is the exploration of the afterlife. Since it's set in Hell in the Hazbin Hotel universe, the fanfiction can delve into what it means to be in Hell and how the reader fits into that world.
Redemption is also a frequent theme. Given the setting of Hazbin Hotel, the idea of Adam finding redemption through his relationship with the reader is quite popular. It could involve him learning about love and acceptance in a new way.
Redemption is a common theme. Since the Hazbin Hotel is about rehabilitating sinners, many fanfics have the reader character going through a journey of self - redemption or helping other characters with their redemption. For example, in some fanfics, the reader might befriend a character who has a lot of guilt and help them come to terms with their past.