Ovalsan's log: The Hazbin Hotel being in Marvel was ment to be a joke for those that could ask me on how it can work well it best if I brake it down in each pieces it was more fitting alternatives.

Who could publish it and how?

Choose one Marvel: Even if Marvel was ment to be a joke but having cover of Charlie dressing up as known Disney princesses would be amusing but if someone like angel dust they could have additional coverings for those that are NSFW if you know what I mean.

Choose two Image comics: this one is more of a logic dictate thing since invisible was made by Image Comics and they are both on Amazon Prime so it would make sense.

Choose three IDW: it's just a personal pic because I mostly read what they have by their brand.

What kind of a story it could have?

Well to be realistic it could act as a prologue to the final season all the series epilogue either way.