https://www.imdb.com/title/tt10691770/ This is a series of short cartoons that are just fucking awesome. The animation is a bit choppy, but it is not terrible. They style is through the roof. The universe is gorgeous. It even has Mara Wilson in it.
This has to be one of the better Adult animation titles around. I could be a bit wrong about the history here, but I am going to explain from what I have gathered. This was put out for free on youtube by this group of animators. The story seems to have come from a person who is big in Hot Topic. There is some very big Invader zim vibes coming along here. Evidently they are making this other title called Hazbin Hotel and put this out for the time being. There is actually a huge awesome breakdown of this here: I suggest watching the series first, though it does not yet have an ending. From what I can see of the progression of release dates it is not that late, and if they are working on Hazbin Hotel and this is just a sort of side project then OMFG they are awesome and I am waiting for more. This is american animation done right and awesome. There is a little bit of animation choppiness in helluva boss, but this is a high end professional production with great voice acting and some very mature themes. There is a lot of swearing and some heavily sexualized jokes. It also stands up to multiple viewings where you will find new comments and parts of it. My first viewing I was marveling so much at what was being presented I missed the nuances. It is the same sort of thing that comes with multiple viewings of programs like animaniacs. The fact it is on youtube with mature warnings and making it into the algorithm because of popularity makes it really amazing.
season 2 episode one just dropped and it is tantalizing. It is Stolas heavy. They actually have a lot of planned out universe for hell.
