 | Ted Levine als Thomas Blackburn |
 | Katia Winter als Anna Roland |
 | Michael McMillian als James Hirsch |
 | Monique Candelaria als Patient 14 |
 | Jenny Gabrielle als Callie |
 | Chad Brummett als Dr. Kessle |
 | David Midthunder als Raoul |
 | Cyd Schulte als Laura Henrik |
 | J.D. Garfield als Retired MK-Ultra Doctor |
 | Vivian Nesbitt als Olivia Kmiec |
 | Alex Gianopoulos als Renny Seegan |
 | William Sterchi als Henry Cale |
 | Corey Moosa als Patient 11 |
 | John Lawlor als Elderly Doctor |
 | Kevin Wiggins als Black Rock County Sheriff |
| Tone Forrest als MK-Ultra Survivor |
| Jerome L. Williams als Orderly |
| Daniel J. Healy | Story |
| Kristen Adams | Production Design |
| Blair Erickson | Director |
| Gudrun Giddings | Executive Producer |
| Jerrad Gray | Makeup Effects |
| Ben Samuels | Executive Producer |
| Sean Akers | Producer |
| Blair Erickson | Writer |
| Andreas Weidinger | Original Music Composer |
| Jeremy Obertone | Director of Photography |
| Zachary Quinto | Executive Producer |
| Marcus Schöfer | Executive Producer |
| Neal Dodson | Executive Producer |
| Angelique Midthunder | Casting |
| Eric Morrell | Art Direction |
| Liz Marshall | Costume Design |
| Stephanie Riggs | Producer |
| John Pinckard | Executive Producer |
| Jacques Gravett | Editor |
| Darryl Garcia Jr. | Script Supervisor |
| Rudi Rossiter | Leadman |
| Erik Bright | Unit Publicist |
| Ed Duran | Stunt Coordinator |
| Gordon T. Wittmann | Visual Effects Producer |
| Alex Gianopoulos | Location Manager |
| Copper Perry | Makeup Department Head |
| Corey Moosa | Producer |
| Marcus Taylor | First Assistant Director |
| Tom Disher | Sound Effects Editor |
| Scott A. Jennings | Supervising Sound Editor |
| Omar Nadir | Graphic Designer |
| Rodney Gurule | Production Sound Mixer |
| Sierra Haworth | Digital Imaging Technician |
| Sean O'Donnell | Property Master |
| Allan Abaunza | Sound Effects Editor |
| Emma Eckert | Set Dresser |
| D. Chris Smith | Sound Effects Editor |
| Sara Roybal | Key Makeup Artist |
| Andreas Mueller | Set Dresser |
| Scott Hastings | Special Effects Supervisor |
| Johnny Gallo | Sound Effects Editor |
| Paul James Zahnley | Sound Re-Recording Mixer |
| Rachel Lively | Set Dresser |
| Eric Munk | Best Boy Electric |
| Nolan Rudi | Second Assistant Camera |
| Brett Becker | Boom Operator |
| Rob Hidalgo | Boom Operator |
| Emmett Corman | Sound Effects Editor |
