| Person | Type | Job | Role(s) |
|---|---|---|---|
 H.P. Lovecraft | Crew | Writing | Writer |
 Rob Neilson | Crew | Editing | Colorist |
Sean Patrick O'Reilly | Crew | Directing | Director, Producer, Writer |
Reid Hendry | Crew | Sound | Sound Effects Editor |
George Streicher | Crew | Sound | Music |
 Camden Filtness | Crew | Crew | Motion Actor |
Erik Fokkens | Crew | Writing | Writer |
Thomas Boatwright | Crew | Writing | Writer |
Dwight MacPherson | Crew | Writing | Writer |
Casey Jones | Crew | Production | Associate Producer |
Saumik Chaudhuri | Crew | Visual Effects | Compositing Artist |
Billy Zhao | Crew | Visual Effects | Animation |
E.T. Dollman | Crew | Writing | Writer |
 Christopher Plummer | Cast | Actor | Dr. Jeffrey West (voice) |
 Doug Bradley | Cast | Actor | Nyarlathotep (voice) |
 Jeffrey Combs | Cast | Actor | H.P. Lovecraft (voice) |
 Mark Hamill | Cast | Actor | Dr. Henry Armitage (voice) |
 Scott McNeil | Cast | Actor | Hamish Rice / Govlins (voice) |
 Ashleigh Ball | Cast | Actress | Ellen Ellery (voice) |
 Alison Wandzura | Cast | Actress | Mary Lovecraft (voice) |
Sean Patrick O'Reilly | Cast | Actor | Spot / Cthulhu (voice) |
 Tyler Nicol | Cast | Winfield Lovecraft (voice) | |
 Finn Wolfhard | Cast | Actor | Herbert West (voice) |
 Kiefer O'Reilly | Cast | Actor | Howard Lovecraft (Voice) |
Summer O'Reilly | Cast | Actress | Gotha (voice) |
Michelle O'Reilly | Cast | Sarah Lovecraft (voice) | |
 Nick Wolfhard | Cast | Actor | William Dyer (voice) |
Vijary Vaibhav Saini | Cast | Professor Jaswant Atwood (voice) | |
Harmony O'Reilly | Cast | Innes (voice) | |
Phoenix O'Reilly | Cast | Twi'i (voice) | |
| Person | Type | Job | Role(s) |
