Hazbin Hotel

Hazbin Hotel is an American adult animated musical series created by Vivienne "VivziePop" Medrano. Its pilot was released to YouTube on October 28, 2019.
The series focuses on Charlie Morningstar, the daughter of Lucifer and princess of Hell, with an almost impossible goal: to help the demons of Hell learn how to be better and get into Heaven.
The series was picked up by the independent film company A24. There is currently no official release date for the show's first season, although many teaser images have been released, including redesigned versions of the main characters.
Promise.
Charlie Morningstar (voiced by Jill Harris), the princess of Hell, opens a hotel called the "Happy Hotel", where she wants to teach demons of Hell how to be better people, in the hopes of getting them into Heaven. Due to overpopulation, Hell goes through an annual purge once a year, where angels descend from Heaven and kill demons. Charlie finds this upsetting, and wants to find a more peaceful solution to the overpopulation problem. 
With the help of her manager and girlfriend, Vaggie (voiced by Monica Franco), and their first customer, pornographic film actor Angel Dust (voiced by Michael Kovach, pilot), she's determined to make her dream become a reality. However, her plan attracts the attention of the powerful "Radio Demon", Alastor (voiced by Edward Bosco), who, despite finding her belief in redemption foolish, wants to help Charlie run the hotel for his own amusement. Alastor renames the Happy Hotel the Hazbin Hotel.