This lists all recurring characters who have their own page. See Characters/Episode for a comprehensive list of all named characters sorted by episode and Characters/Historical for a list of characters who are based on real historical figures.
| Name | First Episode | Description |
|---|---|---|
| Adelard Dekker | MAG 77 | Acquaintance of Gertrude Robinson |
| Agnes Montague | MAG 8 | Avatar of The Desolation |
| Albrecht von Closen | MAG 23 | Friend of Jonah Magnus |
| Alice "Daisy" Tonner | MAG 43 | Police officer called upon to deal with paranormal cases |
| Annabelle Cane | MAG 69 | Avatar of The Web |
| Annie | MAG 8 | Nurse at John Radcliffe Hospital |
| Arthur Nolan | MAG 32 | Previous leader of The Cult of the Lightless Flame |
| Basira Hussain | MAG 43 | Police officer called upon to deal with paranormal cases |
| Breekon and Hope | MAG 2 | Mysterious deliverymen and servants of The Stranger |
| Callum Brodie | MAG 73 | Avatar of The Dark |
| Daniel Rawlings | MAG 1 | Victim of the Anglerfish |
| Diego Molina | MAG 12 | High-ranking member of The Cult of the Lightless Flame |
| Edwin Burroughs | MAG 8 | Catholic exorcist involved with multiple supernatural experiences |
| Elias Bouchard | MAG 1 | Head of The Magnus Institute |
| Eric Delano | MAG 62 | Archival assistant to Gertrude Robinson and father of Gerard Keay |
| Gabriel | MAG 101 | Avatar of The Spiral |
| Georgie Barker | MAG 28 | Host of the What The Ghost? podcast |
| Gerard Keay | MAG 4 | Mary Keay’s son and acquaintance of Gertrude Robinson |
| Gertrude Robinson | MAG 1 | Former head archivist of The Magnus Institute |
| Gregor Orsinov | MAG 24 | Previous ringmaster of The Circus of the Other |
| Helen Richardson | MAG 47 | Real estate agent merged with the Distortion |
| Jan Kilbride | MAG 57 | Astronaut recruited by the Fairchilds for the Daedalus space station. |
| Jane Prentiss | MAG 6 | Avatar of The Corruption |
| Jared Hopworth | MAG 17 | Avatar of The Flesh |
| John Amherst | MAG 36 | Avatar of The Corruption |
| Jonah Magnus | MAG 23 | Founder of The Magnus Institute |
| Jonathan Sims | MAG 1 | Head archivist of The Magnus Institute |
| Jordan Kennedy | MAG 55 | Pest exterminator, now avatar of The Corruption |
| Jude Perry | MAG 67 | Avatar of The Desolation |
| Julia Montauk | MAG 9 | Hunter and daughter of Robert Montauk |
| Jurgen Leitner | MAG 4 | Collector of paranormal books |
| Manuela Dominguez | MAG 57 | High-ranking member of The People's Church of the Divine Host |
| Martin Blackwood | MAG 1 | Archival assistant at The Magnus Institute |
| Mary Keay | MAG 4 | Gerard Keay’s mother and dabbler in the paranormal |
| Maxwell Rayner | MAG 9 | Avatar of The Dark and leader of The People's Church of the Divine Host |
| Melanie King | MAG 28 | Proprietor of the Ghost Hunt UK Youtube Channel |
| Michael Shelley | MAG 26 | Gertrude Robinson's assistant who was merged with The Distortion |
| Michael Crew | MAG 4 | Avatar of The Vast |
| Mikaele Salesa | MAG 14 | Smuggler who deals heavily in paranormal artefacts |
| Natalie Ennis | MAG 25 | Influential member of The People's Church of the Divine Host. |
| Neil Lagorio | MAG 110 | Special effects artist who dominated the field from the mid 70s to the 2000s |
| Nikola Orsinov | MAG 83 | Plastic mannequin created from Joseph Grimaldi |
| Not-Sasha | MAG 39 | The form taken by the NotThem after it replaces Sasha James |
| NotThem | MAG 3 | Shapechanging creature affiliated with The Stranger |
| Oliver Banks | MAG 11 | Avatar of The End |
| Peter Lukas | MAG 33 | Avatar of The Lonely and captain of the Tundra |
| Raymond Fielding | MAG 8 | Owner of a halfway house on Hill Top Road and guardian of Agnes Montague. |
| Robert Montauk | MAG 9 | Serial killer associated with The People's Church of the Divine Host |
| Robert Smirke | MAG 26 | Famous English architect |
| Rosie Zampano | MAG 11 | Employee of The Magnus Institute |
| Sarah Baldwin | MAG 1 | Victim of the Anglerfish |
| Sasha James | MAG 1 | Archival assistant at The Magnus Institute |
| Simon Fairchild | MAG 21 | Avatar of The Vast |
| The Anglerfish | MAG 1 | Being associated with The Stranger |
| The Admiral | MAG 81 | Georgie Barker’s cat |
| The Distortion | MAG 26 | Creature of The Spiral |
| Timothy Hodge | MAG 6 | Victim of Jane Prentiss’s worms |
| Timothy Stoker | MAG 1 | Archival assistant at The Magnus Institute |
| Tom Haan | MAG 30 | Avatar of The Flesh |
| Trevor Herbert | MAG 10 | Self-proclaimed vampire hunter |