Where to watch
Provider data via JustWatch.
Episodes
1Welcome to the Undervale
Sep 19, 202526 min
Desperate to attract paying customers, Katherine hires an exorcist to get rid of the hotel's ghosts. Ben finds an unexpected soul mate.
2Unfinished Business
Sep 19, 202525 min
Katherine is concerned that a rebellious ghost is a bad influence on Esther. A power outage sends Nathan, Ben and Abaddon into the woods.
3Randy Slasher
Sep 19, 202526 min
While Katherine summons the courage to go out on a date, the rest of the crew deals with a creepy killer who targets lusty teens.
4How to Train Your Demon
Sep 19, 202526 min
Abaddon struggles to control his instincts, Katherine bumps into a business rival, and Nathan, Ben and Esther investigate a possible werewolf.
5Rollyfluffs
Sep 19, 202526 min
Esther's plan to become more popular backfires when she starts a dangerous new trend at school. The hotel's honeymoon suite turns on the charm.
6Ghost Hunters!
Sep 19, 202526 min
A ghost-hunting reality show films an episode at the Undervale. Ben opens up to an enchanted diary and shares all his relationship drama.
7Seven Deadly Bens
Sep 19, 202526 min
Ben's desire to be more confident spawns multiple personalities. Meanwhile, Nathan keeps falling through floors... but why?
8Aunt Rose
Sep 19, 202526 min
A curmudgeonly relative comes to visit — with no plans to leave. Abaddon is outsmarted by a doorstop, and Esther experiments with raising the dead.
9The Esthercist
Sep 19, 202526 min
Esther takes charge when soul-sucking demons invade the hotel. Katherine shares a painful truth with Nathan about his death.
10The Acolytes of Abaddon
Sep 19, 202526 min
The good news? There's a busload of red-cloaked customers who want to stay at the Undervale. The bad news? They might be part of a world-ending cult.
Cast
Will Forte
Nathan (voice)
Eliza Coupe
Katherine (voice)
Skyler Gisondo
Ben (voice)
Natalie Palamides
Esther (voice)
Jimmi Simpson
Abaddon (voice)
