Celebrity guests check in to a 'Nightmare Clinic' in an attempt to overcome their nightmares.
| Actor | Role |
|---|---|
 Aubrey PlazaHerself / Julie Jacobs | Herself / Julie Jacobs |
 Jack McBrayerMr. McDougal | Mr. McDougal |
 Pam MurphyMrs. McDougal | Mrs. McDougal |
 Lucas BarkerTimmy | Timmy |
 Matt BesserMonica's dad | Monica's dad |
 Nathan FillionHimself | Himself |
 Seth KirschnerPaul | Paul |
 Darcy FowlerMonica | Monica |
 Eugene CorderoDrake | Drake |
 Gary RichardsonTurg | Turg |
 Amanda LundAlex | Alex |
| JJackShit Dog | Shit Dog |