Haunted Hotel

• 
  E1

  Welcome to the Undervale

  Desperate to attract paying customers, Katherine hires an exorcist to get rid of the hotel's ghosts. Ben finds an unexpected soul mate.

  2025-09-19 · 26m
• 
  E2

  Unfinished Business

  Katherine is concerned that a rebellious ghost is a bad influence on Esther. A power outage sends Nathan, Ben and Abaddon into the woods.

  2025-09-19 · 25m
• 
  E3

  Randy Slasher

  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.

  2025-09-19 · 26m
• 
  E4

  How to Train Your Demon

  Abaddon struggles to control his instincts, Katherine bumps into a business rival, and Nathan, Ben and Esther investigate a possible werewolf.

  2025-09-19 · 26m
• 
  E5

  Rollyfluffs

  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.

  2025-09-19 · 26m
• 
  E6

  Ghost Hunters!

  A ghost-hunting reality show films an episode at the Undervale. Ben opens up to an enchanted diary and shares all his relationship drama.

  2025-09-19 · 26m
• 
  E7

  Seven Deadly Bens

  Ben's desire to be more confident spawns multiple personalities. Meanwhile, Nathan keeps falling through floors... but why?

  2025-09-19 · 26m
• 
  E8

  Aunt Rose

  A curmudgeonly relative comes to visit — with no plans to leave. Abaddon is outsmarted by a doorstop, and Esther experiments with raising the dead.

  2025-09-19 · 26m
• 
  E9

  The Esthercist

  Esther takes charge when soul-sucking demons invade the hotel. Katherine shares a painful truth with Nathan about his death.

  2025-09-19 · 26m
• 
  E10

  The Acolytes of Abaddon

  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.

  2025-09-19 · 26m

Top cast

Will Forte

Nathan (voice)

Eliza Coupe

Katherine (voice)

Skyler Gisondo

Ben (voice)

Natalie Palamides

Esther (voice)

Jimmi Simpson

Abaddon (voice)