In the fourth part of the CarousHELL saga, Duke tries to help Robbie understand growing up isn't scary. On a father/son vacation to a cabin in the woods, Robbie finds the Nekkomeownicon and tries to speak to his late mother. But these words are instead heard by The Leviathan and its demon horde.
| Actor | Role |
|---|---|
 Steve RimpiciDuke (voice) | Duke (voice) |
| BB. BarnabeiRobbie | Robbie |
| JJudy H.R. KirbyJudy | Judy |
| HHenrique CoutoSam | Sam |
 Tom SullivanBruce | Bruce |
| IIan SunnyLunchbox | Lunchbox |
| LLaura HolmesWine Victim | Wine Victim |
| JJordan StreussnigDiana | Diana |
| CCarly SonafeltDiana Body/Usagi Body | Diana Body/Usagi Body |
| BBen DietelsClark | Clark |
 Autumn IvyUsagi | Usagi |
 Aleen IsleyIlsa | Ilsa |
| TTravis ShowmanAnnoying Flier | Annoying Flier |
| MMiles PrinkeyAnnoying Flier's Son | Annoying Flier's Son |
| WWarren Harris Jr.Pierre (voice) | Pierre (voice) |
| PPatrick McCloryPierre (body) | Pierre (body) |
 Haley MadisonSarah | Sarah |
| EEric J HolmesDirty Dish Rag | Dirty Dish Rag |
| SSarah BrunnerMargot | Margot |
| GGeoff McPhersonUnibro | Unibro |
| LLisa L'OrangeMall Victim | Mall Victim |
| RReagan HellerKaren | Karen |
| CCody RuchSmoking Man | Smoking Man |
| MMatt MahonI Still Love Gun | I Still Love Gun |
| DDamien LordHammer Victim | Hammer Victim |
| CChristian GoncalvesCrowbar Victim | Crowbar Victim |
| CChris ProudPreston | Preston |
| CChris SlonekerDrunk Bro 1 | Drunk Bro 1 |
| MMark McConnellKlaus | Klaus |
| PP.J. GaynardCowboy Cool | Cowboy Cool |