Martin Blackwood is one of the archival assistants working for the Magnus Institute and has worked for the Institute since at least 2009. He helps Jonathan Sims, the Head Archivist, by following up on the Archive's cases. Initially, Sims does not appear to value his services, saying he will contribute "nothing but delays.”
Martin is a very doting individual, often worrying about Jon, making him tea or making sure he's okay. He's usually quite nervous around him, stuttering often. He talks very animatedly.
Though it's hard to tell the first three seasons, Martin is a very lonely person. He has no known friends outside of work, a mother who would rather not be around him, and his boss and crush is often dismissive of him. This could be one of the reasons he took to The Lonely so well.
His exact sexual orientation remains unconfirmed, but he is attracted to men.
Martin has never been described physically. The only visualiser is given in MAG 22 when Martin describes himself as "not exactly the smallest guy in the world." Given that he's referring to climbing through a window, it's likely he's referring to his weight rather than his height. Martin is at least implied to be less skinny than Melanie.
Martin is stated to look almost exactly like his father (whose appearance is unknown).
Martin was born around 1987. His mother is chronically ill and lives in a care home in Devon. His father abandoned the family when Martin was about eight or nine years old, and at seventeen he dropped out of school to care for his mother.
He eventually got a job at the Magnus Institute after lying on his CV, claiming to have a master’s in parapsychology.
Martin is frequently mentioned alongside the other archival assistants during statement follow-ups.
He worries about Jane Prentiss, particularly as her worms start to show up in the archives. As precaution, he takes to carrying a corkscrew, for extracting worms from people, and he hides CO2 fire extinguishers in old case file boxes.
On July 29th 2016, Prentiss attacks the Institute. Martin is trapped with Jon until Tim breaks down a wall and leads them into the tunnels. As they flee from the worms, he becomes separated from the others and he eventually stumbles upon the body of Gertrude Robinson.
About a month after Prentiss’ attack, Martin has moved out of the archives, leaving a few notebooks of poetry and an unfinished letter behind.
He contacts the ECDC and gets a jar of Prentiss’ ashes for Jon, who notes that Martin has been showing increased competence and apparent concern for his well-being since Prentiss’ attack. (MAG 41, MAG 55).
After Jon is stabbed by Michael, he lies to Martin, saying he accidentally stabbed himself with a bread knife. Martin becomes increasingly concerned over Jon’s well-being and begins watching him more closely. (MAG 53)
Martin previously told Jon that Trevor Herbert had passed away in the middle of his statement. After Jon finds the second part of the statement, he confronts Martin, and accuses him of lying. Martin apologises, admitting that he was simply repeating hearsay. Jon continues to pressure him and Martin ultimately confesses to having lied on his CV. (MAG 56)
On February 16th, 2017, Jon tells Tim and Martin to head home early as he’s feeling ill and doesn’t want to infect them. They head out but sneak back later. Tim is worried that Jon is going to do something truly foolish and needs to be stopped while Martin is more concerned for Jon’s well-being. As they’re skulking about Jon’s office, they see Not-Sasha, in her monstrous form, head into the tunnels.
Martin refuses to leave Jon and follows Not-Sasha into the tunnels. Tim reluctantly tags along. As they look for Jon, Michael startles them. He finds Jon’s predicament amusing and doesn’t want them to interfere. Martin seems ready to fight until he notices Michael’s hands, realising they’re facing something supernatural, Martin and Tim run away, straight into Michael’s door.
From their perspective, they appear to wander the corridors for days but when they find themselves back in the archives, it is still the same evening. Unsure of what to do, they look for Jon in his office and find the still-bleeding corpse of Jurgen Leitner.
Following Jon’s departure from the Archives, Martin fills in for him and starts recording statements. The process seems to take a lot out of him. He is present when Jon finally returns to confront Elias and is distraught to learn that Elias is a murderer and that Sasha has been dead for nearly a year.
Martin helps research The Unknowing and together with the other assistants, he starts planning how to get rid of Elias without killing him. When the others leave to stop The Unknowing, he and Melanie stay behind.
He burns statements to distract Elias while Melanie breaks into his office. Elias’ punishes Martin by directly inserting the knowledge of how much his mother hates him into his mind but the plan is ultimately successful and Melanie manages to steal the recording of Leitner’s murder.
They hand the recording to the police and Elias’ is put in jail, but not before appointing Peter Lukas as the new head of the Institute.
After the Unknowing has been stopped, Tim is dead, Daisy is missing, and Jon is in a medically impossible coma. It seems unlikely that he will ever wake up and Martin grieves for him. He is left working with Basira and Melanie under Peter Lukas.
About two months after the Unknowing, Martin’s mother passes away and he feels as though he has nothing left to live for. In late 2017, he teams up with Peter, agreeing to work for him in if he keeps the others safe. He tells himself that it is to protect the others but he thinks it might also just be a good way to get himself killed.
Jon returns in February 2018 and Martin finds a new purpose. He intends to protect Jon by keeping Peter’s attention fixed on himself, even if it means cutting himself off from everyone else.
He gradually learns what Peter has planned for him. Peter believes that the Extinction, a fifteenth Entity, is emerging and it could mean the end of the world. He is trying to learn more about it and believes the Institute has a device which will allow him to do just that. It requires someone aligned with the Eye to use and that’s where Martin comes in. Peter intends to make him aligned to both the Eye and the Lonely so that he can use the device while ultimately serving Peter’s interests.
On March 24th, after Jon descends into the Buried’s coffin, Martin places numerous tape recorders around it. He is unsure where he got the idea from but feels it might help him find the way out.
On June 12th, Martin takes the statement of a distressed woman and learns that Jon has traumatised her by compelling a statement. He eventually leaves the recording for Basira and the others to find, asking them to talk to Jon about it.
Peter has had him record statements relating to the Extinction and despite his distaste for Peter, Martin is forced to admit that the threat seems real. He also starts to find his isolation comfortable and manifests the ability to vanish.
Peter’s preparations are finally complete and he brings Martin to the device, it is the panopticon of Millbank Prison. It is currently inhabited by the body of Jonah Magnus and Martin will have to kill him to take his place. Elias shows up and reveals that he has been Jonah Magnus all along and has been prolonging his life by transferring his eyes to new bodies over time. Martin desperately wants to kill him but refuses to go through with it.
He does believe that the Extinction is real but also that everything Peter has been doing is just a power play against Jonah, and he’s not playing along any more. Peter is upset at having been so thoroughly fooled and, at Jonah’s behest, he casts Martin into the Lonely.
For all his pretence, Martin’s connection to the Lonely is real and he is deep in its grip. Jon tracks him down and tries to bring him out of the Lonely but Martin simply confesses that he loved him and vanishes. Jon finds him again after killing Peter. He urges Martin to look at him and finally manages to pull him from the Lonely’s grasp. They leave together.
Martin and Jon flee the Institute and go into hiding. They settle into a comfortable domesticity of sorts in one of Daisy’s safe houses in Scotland. They keep in touch with Basira and after three weeks, she sends some statements as sustenance for Jon. Martin goes for a walk to give him some privacy as he reads it. While he’s away, Elias tricks Jon into completing a mass ritual, bringing all the Entities into the world at once. He finds Jon unconscious when he returns and frantically wakes him. Everything has gone wrong.
- Vanishing - Like Peter Lukas, Martin can vanish from sight and place using the powers of The Lonely. This is the first and only supernatural power Martin has exhibited. He has only been recorded doing this once.
Martin has the majority of his screen time in season four, where the narrative focuses heavily on him and Jon. Bold marks episodes where Martin has read the statement.
- Martin Blackwood is named after horror writer Algernon Blackwood and Martin Corcoran, who voices Dr. Lionel Elliot and Breekon.
- Martin appears to know some amount of Polish, as evidenced in MAG 12.
- Martin is the last surviving assistant from the trio of season one. The other two were Sasha James and Timothy Stoker.
- Martin's D&D class would be bard with no instrument.
- Martin thinks big spiders with fur are cute.
- Martin is a little claustrophobic. 
- Martin's crush on Jon has been planned from the beginning.
- Martin's poetry is available as bonus content on the Rusty Quill Patreon. It is written by the lovely Anil Godigamuwe, Rusty Quill's community manager, and Jonny has described it as 'aggressively mediocre'.
- For the Rusty Quill Gaming & Giving 2019 charity livestream, Anil wrote a poem in just a few hours and Alex J. Newall, Martin's voice actor, recited it on stream.
- Jonny Sims has stated in the season two Q&A that Martin is Not Going to be Okay.
- ↑ MAG 72: Takeaway
- ↑ MAG 120: Eye Contact
- ↑ 3.0 3.1 3.2 MAG 158: Panopticon
- ↑ MAG 131: Flesh
- ↑ MAG 118: The Masquerade
- ↑ MAG 52: Exceptional Risk
- ↑ 7.0 7.1 MAG 56: Children of the Night
- ↑ MAG 42: Grifter's Bone
- ↑ 0MAG 118: The Masquerade
- ↑ 10.0 10.1 MAG 22: Colony
- ↑ MAG 127: Remains to be Seen
- ↑ MAG 142: Scrutiny
- ↑ MAG 149: Concrete Jungle
- ↑ MAG 159: The Last
- ↑ MAG 160: The Eye Opens
- ↑ MAG 120.1 - Season 3 Q+A (Extended Cut)
- ↑ Season 4 Q&A Part 2
- ↑ MAG 15: Lost Johns Cave
- ↑ Season 3 Q&A