Information found online is most likely outdated. All information is to be changed following theory debunk streams, upcoming Patreon comics, and the pilot.
The series focuses on Charlie, the princess of Hell, and her quest to open a hotel for rehabilitating demons. Hell suffers from overpopulation and solves the problem by routinely exterminating its citizens. Charlie, who has grown up in Hell, wants to find an alternate solution to the mass slaughter. She opens the Happy Hotel which aims at teaching demons and sinners to become better people. There is substantial resistance though, and Charlie and her friends must work together to keep the hotel running.
- Jill Harris - Charlie
- Elsie Lovelock - Charlie's singing voice
- Monica Franco - Vaggie
- Michael Kovach - Angel Dust
- Seth Atkinson - Promotional voiceovers
- Edward Bosco - Alastor
- Seth Atkinson - Alastor's singing voice
- Stamper - Sir Pentious
- Mick Lauer - Husk
- Michelle Marie - Niffty
- Krystal LaPorte - Cherri
- Faye Mata - Katie Killjoy
- Joshua Tomar - Tom Trench
- Joe Gran - the Egg Bois
- Un-casted - Crymini
- Un-casted - Mimzy
- Un-casted - Baxter
- Before "Hazbin Hotel" became the official name for the series, the series was temporarily named "People Like Us".
- Hatchet, Marx, and other yet-to-be-seen characters from Viv's webcomic Zoophobia appears as cameo characters.