Alison Herman TV Critic The animated comedy “Hazbin Hotel” has a feel-good backstory belied by its grim premise: a horde of demons suffer eternal damnation in Hell, their ranks periodically culled in mass exterminations led by armies from Heaven. Creator Vivienne Medrano, founder of YouTube channel VivziePop, independently produced the pilot with money from her Patreon, and posted it to the streaming site in 2019.