 | Alix Wilton Regan als Mary Shelley |
 | Giullian Yao Gioiello als Percy Shelley |
 | Philippe Bowgen als Lord Byron |
 | Claire Glassford als Claire Clairmont |
 | Lee Garrett als Dr. John Polidori |
| Shannon Spangler als Harriet Shelley |
| Nora Unkel | Director |
| Nora Unkel | Writer |
| Dave Conlon | Executive Producer |
| John Connor | Executive Producer |
| DJ Dodd | Executive Producer |
| Frédéric Fiore | Producer |
| Bruce Fleming | Executive Producer |
| Robert Menzies | Producer |
| Paul Moyer | Executive Producer |
| Gabriel Rosenstein | Producer |
| Devin Shepherd | Producer |
| Eric Tavitian | Producer |
| Dan Wong | Executive Producer |
| Jon Cziner | Music |
| Scott Schuler | Editor |
| Madeline Wall | Production Design |
| Deidra Catero | Art Direction |
| Jennifer Stroud | Costume Design |
| Bella Armenti | Assistant Makeup Artist |
| Suzzy Kotoku | Assistant Makeup Artist |
| Mickayla Pence | Key Makeup Artist |
| Candice McHugh | Post-Production Manager |
| Lina Lansky | First Assistant Director |
| Jack Rucigay | Second Assistant Director |
| Brandon Bak | Foley Artist |
| Deanna Marano | Sound Effects Editor |
| Shacora Mitchell | ADR Mixer |
| Ian Rodness | Sound Mixer |
| David Thompson | Sound Mixer |
| Brad Tigwell | Dialogue Editor |
| Sam Javanrouh | Visual Effects Supervisor |
| Helen Thach | Visual Effects Supervisor |
| Drew Leary | Stunt Coordinator |
| Max Batchelder | First Assistant Camera |
| Jasmine Chang | Second Assistant Camera |
| Jessica DeNoia | Still Photographer |
| Briana Man | Gaffer |
| Avery Miritello | Grip |
| Simeon Pol | Key Grip |
| Christoph Russi | Grip |
| Veundja Katuuo | Wardrobe Assistant |
| Jasmine Murray-Bergquist | Assistant Costume Designer |
| Madeleine Shepherd | Production Assistant |
| Natalie Wrubleski | Production Assistant |
| Mark Driver | Digital Intermediate Colorist |
| Blair Slater | Assistant Editor |
| David B. Jacobs | Script Supervisor |
| Jared Bloch | Legal Services |
| Caroline Daube Broughton | Production Assistant |
| Claudia Burgi | Production Assistant |
| Michelle Chang | Attorney |
| Hana Kim | Production Assistant |
| Katie Lau | Production Assistant |
| Sean Pope | Attorney |
| Oren Soffer | Director of Photography |
