Welcome to the Undervale

7.0/10 · 826 votesSep 19, 202526 min

Ranked #10 of 10 in Season 1•−0.6 vs season avg

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

Season 1 Episodes10

E1 7.0Now viewing

Welcome to the Undervale

E2 7.3

Unfinished Business

E3 7.7

Randy Slasher

E4 7.4

How to Train Your Demon

Rollyfluffs

Ghost Hunters!

Seven Deadly Bens

Aunt Rose

The Esthercist

The Acolytes of Abaddon

Cast5

Will Forte

Nathan (voice)

Eliza Coupe

Katherine (voice)

Skyler Gisondo

Ben (voice)

Natalie Palamides

Esther (voice)

Jimmi Simpson

Abaddon (voice)

Crew3

Matt Roller

Writer

Erica Hayes

Director

Christopher Nance

Director

Discussion

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Episode Summary

"Welcome to the Undervale" is episode 1 of Haunted Hotel season 1. It scored 7.0/10 from 826 votes, ranking #10 of 10 episodes this season (season average 7.6). Directed by Erica Hayes, Christopher Nance and written by Matt Roller, it aired on September 19, 2025.

Welcome to the Undervale

Seasons2

Season 1 Episodes10

Cast5

Crew3

Discussion

Episode Summary