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Characters / DOOM (2016): UAC and ARC

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    In General 
The Union Aerospace Corporation, a Mega-Corp whose research into Argent energy ended up unleashing demons from Hell, first on Mars, and then upon Earth itself.
  • Apocalypse Cult: In Eternal.
  • Corrupt Corporate Executive: A fair chunk of their upper ranks are Hell cultists.
  • Evil, Inc.: Zig-zagged. The company's Mars division was overrun by cultists that worship Hell and are trying to bring the infernal hordes through to Earth. This corruption is revealed in Eternal to reach into the company's uppermost brass. However, the UAC assets under Samuel Hayden's direct control remain uncorrupted and have been subsumed into the Armored Resistance Coalition, forming its technological and industrial backbone.
  • NGO Super Power: Having effectively monopolized humanity's energy industry prior to the events of 2016, they have more influence on global affairs than most governments do. This winds up biting Humanity in the ass when the company is infiltrated by insane cultists.
  • Political Correctness Gone Mad: They would appreciate it if you called the demons the "mortally challenged".

    Samuel Hayden 

Voiced by: Darin De Paul
"I am not the villain in this story. I do what I do because there is no choice."

"I'm willing to take full responsibility for the horrible events of the last 24 hours, but you must understand - our interest in their world was purely for the betterment of mankind. Everything has clearly gotten out of hand, yes, but it was worth the risk. I assure you."

Dr. Samuel Hayden is the chairman of the UAC and the official who oversaw the Argent energy research projects at the UAC Mars Base. After an unknown incident during construction of the facility's Argent Tower which caused him to develop brain cancer, he was forced to replace almost the entirety of his body with cybernetics.

Hayden is adamant in defending his original research projects into Hell and its Argent energy reserves, stating that it was all in mankind's best interest, and that the sacrifices made would have been worth the cost, if his other staff had been able to resist the corrupting influences of the demonic dimension. While he seems friendly, whether or not he can be trusted must be regarded as a question.
  • Affably Evil: He's unfailingly polite to the Doom Slayer, even when the guy destroys irreplaceable technology that Hayden himself made. Even if the Doom Slayer tries to shoot him (and Hayden's energy shield will absorb it), he just calmly tells him to save his ammunition.
  • Ambiguously Human: Despite his past as a flesh and blood human, there's something off about both his mannerisms and his speech patterns. Come Eternal he has suddenly gained complete knowledge about the Sentinels and the Maykrs, and now calls humanity 'your people' when talking to the Doom Slayer, implying that he doesn't count himself among them. The game also reveals the "Seraphim" who gifted Doomguy great strength and speed sounds exactly like Hayden and even uses the same lines when empowering the Slayer as when Samuel gave Doomguy his first argent energy cache on Mars. Further, Samuel's robotic body is revealed to be utterly "alien" in design, and it was shown to be sufficiently similar to the Doom Fortress's system in order for him to transfer his consciousness into it due to being similar enough to Maykr ship processes. He and the Maykrs also both refer to their separate Hell energies as Argent Energy, despite having little to no contact with each other directly. Whether this means Samuel was replaced by the Seraphim at some point, or is slowly being possessed by him, or something else entirely, is left unclear, however.
  • Authority Equals Asskicking: Leader of the UAC and doubtlessly its strongest fighter, thanks to his cybernetic body. He's the only person other than the Doom Slayer to survive a trip to Hell and back. In Eternal, it's revealed that he personally led the forces of humanity in battle wielding the Crucible, though this worked out less than perfectly, with him essentially on life support and missing several limbs by the time the Doom Slayer takes him away.
  • Badass Baritone: His deep voice has drawn more than a few comparisons to Peter Cullen's take on Optimus Prime.
  • Bad Boss: It's not clear how much of a hand he had in drafting the UAC's more sinister policies on Mars (a seven-day workweek, deliberately sacrificing workers to demons simply to acquire better data, etc.), but it's implied that he at least willingly turned a blind eye to it. Even during the Mars outbreak, he is rather cavalier about the deaths of his employees, admitting responsibility but expressing zero remorse, as he deems the UAC's energy extraction Worth It.
    • To his credit, he does draw the line at the industrial-scale planetary genocide that is required to create Argent Energy in the first place.
  • Big Good: Hayden becomes the de facto leader of ARC, leading the resistance against the demonic invasion. His continuous efforts in trying to stop the demons make him a Living Legend for many survivors.
  • Brain Uploading:
    • After being diagnosed with cancer, he had his frontal and temporal lobes transferred into a cybernetic body, retaining his personality, memories, reasoning, and comprehension. At least, that's the official story
    • Sort of gets this again in Eternal, transferring his consciousness out of his destroyed body and into the Fortress of Doom.
  • Cyber Cyclops: Sports a single, thin eye. Makes it easy to forget that he's a cyborg and not a fully-fledged robot.
  • Cyborg: His body houses non-cancer infected parts of his brain, but the calculative parts are replaced with machinery — this, in effect, means that while his personality is the same as before his brain was put into the nine-foot body, he now has the mental acuity of a supercomputer and the strength to be expected by a 3-meter tall machine.
  • Deadpan Snarker: Upon telling the Doom Slayer to head towards the research complex to retrieve The Helix Stone, he drops this line:
    Samuel: Your affinity for guns is apparent... I'm confident you'll find something useful there as well.
  • Deflector Shields: His cyborg chassis has very powerful energy shields that prevent the Doom Slayer from simply shooting him on sight. Sadly, come Eternal, this proved insufficient to protect him from an extended fight with The Legions of Hell.
  • Does Not Like Guns: Subtly implied. Hayden never uses guns himself, even when journeying into Hell, and emphasizes the word "guns" when talking to the Doom Slayer as if it's beneath him even to speak the word. The codex seems to imply he wielded the Crucible sword rather than use any firearms when fighting the demons on Earth.
  • Emergency Transformation: Upon being diagnosed with brain cancer, Hayden transferred his consciousness into an argent-powered robot body. The new Hayden is even more impressive a mind than he was when mortal.
  • Even Evil Has Standards: Not exactly "evil" so much as "morally questionable to a dangerous degree". While initially, he refuses to give up on Argent energy as he sees it as an important resource, regardless of where it comes from, in Eternal he learns or perhaps remembers, that Argent is quite literally the tortured, broken souls of Hell's victims, cruelly distilled into refined energy by merging it with the "holy" energy of the Sentinels by the Maykrs. After that, he couldn't suffer it to exist any longer, and codex tabs reveal that he had been trying to research a way to create a synthetic Argent Energy using the Demonic Crucible to remove Earth's connection and dependence to Hell.
  • Four-Fingered Hands: His new body was built with only 8 digits.
  • Frontline General: After the demonic invasion of Earth, Hayden assumed control of the remnants of humanity's military forces, and personally led a massive counter-attack which was supposed to turn the tide of the war. Unfortunately, the attack failed and Hayden's robotic body was torn apart during the fighting.
  • Godzilla Threshold: Waking up the Doom Slayer. Hayden is well aware the Slayer would wreak just as much devastation on the UAC's property as the demons but wakes him up anyway because, at the end of the day, the destruction of UAC property beats Hell conquering Mars and Earth, and Hayden knows it.
  • Half the Man He Used to Be: He suffered heavy damage during a decisive battle against the demons on Earth. When you meet him again in Eternal, all that's left of him is his head, upper torso, and left arm.
  • Hazy Feel Turn: In Eternal, he clearly has changed his stance on controlling Argent and aids the Slayer in ending the invasion of Earth once and for all, but his overall opinion of the Slayer and subsequently his actual agenda past the invasion remains up in the air by the end of the game.
  • Insufferable Genius: He has a very high opinion of his intellect and believes he can harness the powers of Hell for the good of humanity without falling to Hell's influence. He's not entirely wrong, but, unfortunately, the rest of the UAC was less resilient.
  • Ironic Name: Despite his name being Satan-like, he is strongly opposed to letting the demons conquer our world, even as he draws from theirs to stop an energy crisis and becomes appalled after learning where the energy he sought comes from.
  • Large and in Charge: His body was specifically built to be 3 meters tall, and he leads the UAC. One codex entry mentions him exploiting it, as the lever that sends Argent Energy to Earth is big enough that only he can pull it, and uses this to forcibly make sure he can never be pulled away from his position.
  • Leitmotif: Every time that Hayden appears, a song with high usage of industrial EDM sounding music plays.
  • Laser-Guided Karma: In Doom VFR, he deletes protagonist Abraham Peters' consciousness so he doesn't cause any more "problems". Come Eternal, by the time the Slayer encounters Hayden's remains, he is torn in half with the lower half of his right arm missing—the exact same kind of damage Peters' corpse sustained in Doom 2016 and VFR.
  • Loss of Identity: It's ambiguous just how much of the human Hayden is left, and how much of him was subsumed by the Maykr technology he used to build his robotic body. His mannerisms in Eternal are noticeably different from how he acted in 2016, he's undergone a complete 180 on using Argent Energy, and he displays a thorough knowledge of some topics that Hayden should have never known about. This, of course, assumes that Hayden was ever human in the first place, as there is strong evidence that indicates that Hayden is really Samur, the Maykr seraphim who first empowered Doomguy in Taras Nabad to turn him into the Doom Slayer.
  • Meaningful Name: Samuel Hayden > S. Hayden > Satan, meaning someone who turned against Heaven. However, as Eternal shows, this just means he's more trustworthy, given "Heaven" is in league with Hell. It could also point to his potential past as a fallen angel of sorts, not unlike some depictions of Satan.
  • Mission Control:
    • He's the one who gives the Doom Slayer directions on what to do, though the Slayer's willingness to actually follow through on said directions varies from time to time.
    • Returns as the Mission Control for the final half of Eternal alongside VEGA, up until the assault on Urdak anyway, subsequently leaving Hayden as the Slayer's last remaining ally for the remainder of the game.
  • Morally Ambiguous Doctorate: Isn't a full-on cultist like Olivia, but still very interested in exploiting Hell's resources. And while his conflict with Olivia is obvious, one has to wonder if and how much of the UAC Mars branch's cult behaviour and development of "battle demons" were allowed to proceed with his knowledge and/or blessing. He comes back from the brink in the final act of Eternal, after realizing (or rather revealing) just where Argent actually comes from, it's too abhorrent for even him to consider, and he squarely sides with the Slayer insofar as it has to go — all of it.
  • Mysterious Past: There is little debate that Samuel Hayden was one of the brightest minds of the UAC, and that after being diagnosed with a terminal illness he transferred the healthy parts of his brain into a massive robotic body. This is where things get hazy; there are several suggestive things about him, such as the similarities to Samur the Seraphim, right down to similar lines and the same voice actor, and the fact that his robotic shell is noted to be "alien" in design and capable of interfacing with the Maykr/Sentinel-designed Fortress of Doom seamlessly. Whether from the Fortress and Codex or from personal knowledge, he also seems to know just about everything involving the Sentinels and the Maykrs, including the truth of how Argent energy is made.
  • Mr. Exposition: Hayden turns into this for the later parts of Doom Eternal where he frequently explains to the Doom Slayer plot-related fact and other lore. This includes information he couldn't possibly know if he were a normal human being or even a Night Sentinel, giving hints to his own identity in the course of the exposition itself.
  • Nigh Invulnerable: The only other human besides the Doom Slayer to make it back from Hell and without a gun to defend himself. Being a cyborg with an energy shield, not much could scratch him.
  • No-Sell:
    • Go on, try shooting him when you meet him in person. He'll scoff that you're wasting ammunition as his energy shields negate the shots.
    • He's also the only person besides the Doom Slayer who is shown to suffer no ill effects from direct exposure to Hell and Argent energy (due to being in an inorganic cyborg body).
  • Not Me This Time: You might be quick to assume that Hayden's continued experiments with the Demonic Crucible after the events of Doom 16 were responsible for the invasion of Earth shortly thereafter. Surprisingly, this is not the case; the invasion was a pre-planned event orchestrated by the Khan Maykr and her Hell Priests. In fact, it was one of these priests, Deag Ranak, who drove Olivia Pierce to develop a Hell cult on Mars in the first place.
  • Not So Different: To the Khan Maykr. They both face the same crisis: their worlds are dying, they need energy, and Argent is a solution that won't only save their worlds but put them firmly back in the black. The trouble is, Argent requires continuous genocide on an intergalactic scale to sustain. While Khan Maykr's more than happy to walk that line, Hayden ultimately can't bring himself to cross it.
    • Furthermore, Hayden may be literally part Maykr (if not completely); that is, the cybernetic portions of Hayden's brain are implied to be derived from their technology. ARC scientists couldn't figure out how to access his cortex and described it as "alien", and he was able to transfer himself into the Fortress of Doom's systems (which are of Maykr design) because they have similar digital architecture. Not to mention his thorough knowledge of Nekravol, Urdak, and the history of Argent energy, which a human could not possibly have access to.
  • Not So Similar: There is an important difference between him and the Khan Maykr, though; he has empathy and moral boundaries even he will not cross. He will not allow Earth to become just as much of Hell's co-conspirator as Urdak is, and will not allow any more worlds to suffer for Argent energy.
  • Not So Stoic: Noticeably loses his cool once the Doom Slayer starts destroying the Argent Energy filters. As this goes on, this gives way into Tranquil Fury.
    Samuel: You must stop. The Hell energy is unusable without the filters!
  • OOC Is Serious Business: He rarely shows emotional inflection in his voice, aside from some brief exasperation at the Doom Slayer's more destructive actions. But after learning about how Argent Energy is made, he sounds noticeably more disturbed and upset.
    • Furthermore, while describing the process of producing Argent Energy to the Doom Slayer, he doesn't just sound upset; he's downright seething, his voice dripping disgust and fury, using emphatic language completely at odds with the clinical, detached language he employed in 2016.
  • Pet the Dog: He is willing to sacrifice all of his employees to solve the energy crisis on Earth but seems to respect their sacrifices, as shown when he thanks Vega after the latter pull a Heroic Sacrifice. In the sequel, he has enough empathy to be audibly furious while he describes how Argent Energy is made.
  • Really 700 Years Old: Thanks to his Argent-powered cybernetic body, he's practically immortal. He's over 130 years old by the events of the game. If he's really Samur, he's been around for a ''lot'' longer than that.
  • Reasonable Authority Figure: Relatively speaking, when compared to Olivia and especially the Khan Maykr. He seems to be the only person in the UAC who realizes how much Olivia has been corrupted by Hell and recognizes that a full-on demonic invasion is not a good thing. If he had recognized the immediate threat Olivia posed to the UAC Mars installation, the initial Martian invasion could have been prevented. Furthermore, after discovering the true nature of Argent Energy he forsakes it all together, and instead turns to develop a synthetic alternative to Argent, all the while leading the ARC against the demonic invasion on Earth.
  • Red Baron: According to the DOOM Eternal Collector Edition's Lore Book, he's known and reviled by the demons as the "Lucent Defiler".
  • Sapient Ship: In Eternal, he becomes integrated into the Fortress of Doom and more or less serves as the ship's Computer Voice alongside VEGA, even replacing it once it removes itself from the system.
  • Straight Man: Plays this role in contrast to the Slayer's Blood Knight tendencies and VEGA's complacency in Eternal once he's brought back into the fold, occasionally baffled by the Slayer's... ingenuity in stopping the invasion, though he's as deadpan as ever.
    Samuel: You can't just shoot a hole into the surface of Mars...
    Mission Objective: Shoot a Hole in Mars.
  • Teeth-Clenched Teamwork: With the Doom Slayer. Samuel would really rather that the Doom Slayer didn't destroy all the machinery that extracts energy from Hell, which clashes with the Doom Slayer's view of 'Rip and tear everything and everyone related to Hell'.
  • This Is Unforgivable!: After learning what Argent energy was, even he was so disgusted he promptly swore it off forever and promptly starts plotting to kill the Khan Maykr for her absolute selfishness.
  • Tranquil Fury: As the Doom Slayer destroys the Argent energy filters one by one, he becomes increasingly stressed in his otherwise collected tone of voice. By the time the Slayer gets to the third and final filter, Hayden finally lets loose and gives him a What the Hell, Hero? ramble:
    Samuel: If stopping our energy production is what you want, then you need only to destroy this last filter, and Argent energy will no longer exist in this solar system... We will be back at square one.
    (The Doom Slayer hesitates for a moment, takes a glance at the Argent Tower, then pulls his fist back and destroys it)
    Samuel: You have no idea what you have just done.
    • Later in Eternal, he shows thinly-veiled resentment at Khan Maykr and her methods in creating Argent energy, as well as the lengths of her desperation to keep her power by any means necessary, even allying with Hell and damning countless worlds to oblivion. It is a key development that contrasts his own prior behaviour that made him almost Not So Different to the Khan Maykr.
      Samuel: It is an unholy union and cannot stand any longer.
  • Utopia Justifies the Means: Debated. He spends the whole game justifying the use of Argent energy, despite its Hellish origins, because it's a solution to humanity's energy crisis. By the end, he concedes that the Doom Slayer might be right about destroying all of Hell. But "having an unsolvable energy crisis" is not an alternative, so he turns on the Doom Slayer at the end.
    • Finally averted in Eternal. When Hayden learns the true source of Argent Energy, he decides that it's no longer worth using and aids the Doom Slayer in crippling the source, all the while researching a way to synthetically replicate it using the Crucible as an "Argent Conductor".
  • Villain Respect: Well, not exactly villainous, but he agrees with the Doom Slayer's method of dealing with The Legions of Hell, saying he may be right in killing them all.
  • Well-Intentioned Extremist: Samuel considers mining Hell for its resources a solid solution to a problem that has no other and, indeed, it is shown to be working for at least a century, having prevented an energy crisis that humanity has no answer for. To him, there is no alternative, and thus any sacrifice/risk is worth it to keep humanity's lights on - and, indeed, he is presented as having a point.
    Samuel: You think the only way is to kill them all - leave nothing behind - and you may be right. But we can't just shut it all down. Without Argent Energy it will be worse [...] I am not the villain of this story. I do what I do because there is no choice.
  • You Have Outlived Your Usefulness: As soon the Doom Slayer defeats the Spider Mastermind, Samuel takes the Crucible and sends the Doom Slayer to parts unknown. Also subverted: Samuel knows he'll need the Doom Slayer if another demonic invasion happens, so he just exiles him (so he won't interfere with Samuel's research) instead of killing him.
    • However Peters isn't so lucky.

    Olivia Pierce 

Voiced by: Abby Craden
"You could not have saved them, anyway."

"I believe in honesty... especially now, in what will be your final moments in this world. All the rumours... the human sacrifices... the Hell portal... the demons... it's all true. My sisters and brothers, be thankful. You will be the first. You will have a seat alongside them as I will in what will become the new world they create for us. Starting now."

Dr. Olivia Pierce is a high-ranking adherent and researcher in the UAC and has taken practical control of the UAC Mars Base by causing a Hell Wave of Argent energy while releasing all of the captive demons in the Lazarus Labs, zombifying 64% of the staff and killing the rest. She is a major antagonist of the game, and opposes Dr. Samuel Hayden, whose claimed interests are only in Hell's Argent energy, by trying to bargain with the demons and open a permanent portal to Hell.

Olivia was formerly an ordinary woman, as demonstrated by a picture of her prior appearance which can be found in the Advanced Research Complex on an array of monitors displaying high-ranking UAC researchers. However, her long-term exposure to Hell deteriorated her physical body as it had Samuel's, causing her to develop debilitating scoliosis. In an attempt to remedy this and maintain mobility, she had herself integrated into an artificial exoskeleton. While this worked, the exoskeleton keeps her in a constant state of pain and torment, which, in her ever-increasing fanatic dedication to Hell studies, she refuses to remedy through medication, lest her mind is dulled in any way.
  • Be Careful What You Wish For:
    • Turns out, making deals with the literal demons of Hell is likely to give you exactly what you bargained for: You'll get "power beyond comprehension" alright, but it's by transforming into the Spider Mastermind, a massive brain-shaped creature with an arachnid-like mechanical chassis, an Argent plasma gun, and immense telekinetic powers.
    • And even if the transformation was part of the bargain a codex entry heavily implies that she's merely acting as the host body for the Mastermind. When you ask for the power of a god, make sure to specify that you'll be the one in control.
  • Big Bad: Causes the events of the game. Becomes the final boss, the Spider Mastermind.
  • Cameo: A statue of her appears briefly in the Nekravol level of Eternal. Naturally, you have to destroy it for progression.
  • Cyborg: Her scoliosis required her to turn to a cybernetic exoskeleton to maintain her ability to walk. One that was grafted into her spine and keeps her in constant pain.
  • Deal with the Devil: Makes an agreement with Deag Ranak to help the Demonic forces invade Mars in exchange for godlike power. Be Careful What You Wish For, you might just get it.
  • Determinator: Whatever you have to say about her, she's an unarmed, incredibly sick woman, who breaks open the gates to Hell in order to make the demons live up to their side of the bargain.
  • Evil Brit: She speaks with a British accent, and is as evil as they come.
  • Evil Cripple: Has a severe neurological disorder which forces her to wear an exoskeleton in order to walk; she refuses pain medication because she feels it dulls her mind.
  • Evil Is Petty: Honestly, her goodbye note for her followers is pretty much an eloquent version of So Long, Suckers!.
  • Evil Makes You Ugly: After triggering the portal to Hell with an Argent reactor, the glimpse we see of her right before she turns into the Spider Mastermind is already a bit zombified.
  • Expy: Serves as this continuity's version of Malcolm Betruger from Doom 3 as another Mad Scientist who helps the demons access our dimension in return for the promise of untold power.
  • Fate Worse than Death: Her deal with Hell for godhood would have been this; trapped in a giant demonic monster, powerless to control it, forced to watch as it ravaged Earth and humanity.
    • In Eternal we come across a statue of Olivia within the depths of Nekravol. It's crying.
  • Gamer Chick: Implied; she has the second-highest score on the UAC leaderboards for Demon Destruction.
  • Genre Blind: Exceptionally so, to think that her Deal with the Devil would benefit her in any way in the long run.
  • Godhood Seeker: Her plan was to open a portal to Hell and offer up humanity as a sacrifice to the demons, after which the Lords of Hell would reward her by turning her into a god.
  • Hell Seeker: Her whole motivation is to open a portal into Hell.
  • Hoist by Their Own Petard: She gets a few of these.
    • She's Rewarded as a Traitor Deserves for her Deal with the Devil, stripping her of any humanity she might have had left.
    • The Glory Kill that finishes her off involves shoving the BFG into her mouth, resulting in having her brains blown out by a weapon she helped create.
  • It's All About Me: Her final message in the Codex to her subordinates is that they are all going to die solely for the benefit of her, and that they should be glad for it.
  • I Was Quite the Looker: You can find a picture of her in her younger years in the Advanced Research Center, and, my God, she looks significantly healthier and more attractive than the current haggish witch she is now.
  • Karmic Death: After selling humanity out in the name of personal power from her demonic overlords, she’s betrayed by them and twisted into the Spider Mastermind, before finally becoming the last victim of the Doom Slayer’s vengeful rampage.
  • Kick the Dog:
    • When she meets the Doom Slayer face to face (with a bullet-proof window between them) at the Foundry after overloading the Argent Tower she tells him matter-of-factly that he could not have saved them anyway. Whether she's referring to the all the dead personnel in the UAC Mars Facility or his people back on Argent D'Nur is up to interpretation, but what she says is horrible either way.
    • And, of course, there's her goodbye message to her followers.
  • Leitmotif: "Authorization: Olivia Pierce", which is a remix of "Suspense".
  • Meaningful Appearance: Her becoming the Spider Mastermind is very poetic - she made a Deal with the Devil for power and godhood and betrayed her own people just for that. But she didn't really consider how demons, in general, see humanity (save for the Slayer himself) as mere insects. Instead of the healthy, all-powerful goddess like she hoped she would be, she became a highly intelligent albeit grotesque, demonic beast whose appearance echoes that of a spider, referring to her sins, and being left by the demons she sided with to be put down like a rabid animal.
    • Even before being turned into the Spider Mastermind, her physical body is visibly deteriorating from The Corruption. Pictures and video recordings of her from around the time that she first made her Deal with the Devil show that she originally looked fairly normal for a human woman of her age. By the time the Doom Slayer encounters her in person just before she willingly jumps through the Hell portal, her appearance is already beginning to show signs of The Corruption taking its toll on her physical body. By the time the Doom Slayer catches up to her again right before she is forcibly transformed into the Spider Mastermind, her body has withered away from both The Corruption and prolonged exposure to Hell itself to the point where she is little more than a literal walking corpse with barely enough strength left to walk and talk under her own power.
  • Morally Ambiguous Doctorate: Before joining the UAC she was an accomplished and perfectly sane Bioengineer and Geneticist, but then Hayden, in trying to convince her to join his company, showed her an artifact that created her obsession with Hell, and she turned the UAC into a cult as a direct result.
  • Not-So-Well-Intentioned Extremist: She preaches to anyone in the cult she's set up and to anyone who would listen to her that the forces of Hell would allow mankind to advance and evolve. However, her codex entry privately discloses that she was either so far gone or merely blowing hot air to make the masses more pliable to do her bidding and reveals this as a ruse, with her actual goal being to procure godlike power for herself, with her last entry to her followers essentially being a cruel screw-you about how they'll suffer in eternal torment, completely forgotten, while she ascends to godhood.
  • Oh, Crap!:
    • At the very beginning of the game, in the hologram recording around the Doom Slayer's coffin. She keeps her composure but clearly realizes that if what's inside wakes up, she's completely hosed.
    • When you make it to her office in the Lazarus Complex, an Echo flashback shows her being confronted by a mysterious demonic voice for letting the Doom Slayer be found and released. For the only time in the game, Olivia is terrified and attempting to placate the voice by saying Hayden did that and she'll still uphold her end of their deal.
  • Path of Inspiration: She's turned the UAC from an energy company into a Hellish cult with lies and promises of rewards.
  • Rewarded as a Traitor Deserves: She defects from the UAC to the The Legions of Hell, either having been drawn in by their promises of power or the thought that they could help humanity’s evolution only to suffer Sanity Slippage from The Corruption, and in the end, they rewarded her by transforming her into a mechanical, big-brained monstrosity and leaving her to die after she fails to kill the Doom Slayer.
    Dr. Olivia Pierce: They promised me... so much...
  • Smug Snake: Although she managed to unleash the demons upon the UAC station, it’s painfully obvious despite her best attempts to pass off her shady activities as scientific work that her superiors knew exactly what she was planning, and excavated the Doom Slayer’s sarcophagus as a countermeasure should she go through with it. She also sincerely thought that her demonic benefactors wouldn’t double-cross her the first chance they got. But by the end of the game, you’ll find out for yourself how that goes.
  • The Sociopath: While it’s unclear whether she was this from the beginning, or due to the after-effects from her Deal with the Devil, she ultimately reveals herself to be a cold, cruel, selfish, calculating woman who summons up a cult to help her achieve godhood in the name of advancing mankind’s evolution and ultimately leaves them to perish after their usefulness is used up while leaving behind a note sadistically informing them of their impending fate For the Evulz.
  • Straight Edge Evil: Would rather live in pain than risk medication that would slow her mind.
  • Ungrateful Bitch: Her final message to her followers is basically her smugly and verbally flipping them off and selling them out to die while she goes on to become a goddess.
  • Unwitting Pawn: To Hell itself, given the horrible things she caused in hopes that it would reward her and only her. That didn't work out too well. Codex entries in Eternal go an extra mile to imply that the entirety of Olivia's actions were remotely stirred by the Hell Priests in their own preparations for the invasion of Earth.
  • Vocal Evolution: As The Corruption is causing not only her mental stability, but also her physical well-being to gradually worsen over time, it's reflected by her voice becoming increasingly weaker and frailer.


Voiced by: Kevin Schon

VEGA is an artificial intelligence which is responsible for the operation of the UAC Mars Base. It is capable of analyzing the Praetor Suit and enabling some of its latent functionality, resulting in advancements in combat capability and maneuverability.

  • Ambiguous Situation: In Eternal, VEGA is left behind on the dying world of Urdak, seemingly being fried or perhaps reset in the process with neither Samuel nor the Slayer raising a note about it.
  • Amnesiac God: One line in the mission "Urdak" in Eternal gives the option that it is not a man-made artificial intelligence, but whatever "the Father" is that made the Maykr, brought to Earth by Samur Maykr. However, when it asks Hayden, he characteristically ignores its words.
    VEGA: I can see now... Am I... the Father, Dr. Hayden?
  • Artificial Intelligence: VEGA is the Master Computer that runs the Mars facility. In-universe, it was put to the Turing Test alongside a supposed professor from MIT; the results were that only 8% of the participants realized that VEGA was the machine. VEGA successfully fooled the remaining 92% into believing the whole test was a prank and that both subjects were human. Unbeknownst to the participants, however, the professor was also played by VEGA.
  • Benevolent A.I.: Not only does VEGA - a sentient AI fuelled by Hellish energy, and the brain of the UAC facility-turned-Hell cult - completely fail to go rogue and try to stop you, he remains calmly cooperative throughout the process of walking you through killing him. In Eternal, VEGA becomes the Doom Slayer's Mission Control, helping him to keep the Fortress of Doom running, providing intel, and teleporting the Doom Slayer to the places he needs to be.
  • Big Brother Is Watching: Supposedly, VEGA monitors everything going on at the UAC, barring some top-level research.
  • Deus Est Machina: Given the last comments from him before he begins aligning the portal rings, it is very likely that VEGA is no mere AI - it's The Father of Maykr belief, the one responsible for their creation. How it came to be VEGA is something that Samuel Hayden is probably the only one who knows about.. and he isn't telling.
  • Do Androids Dream?: Right before VEGA is about to overheat, just as the Doom Slayer makes a backup, VEGA tells Samuel Hayden that he has "many regrets". This is the first and only time he shows anything resembling a train of personal thought.
  • Foreshadowing: DOOM (2016) notes that "it is rumoured that VEGA's core is powered by a piece of arcane technology found near the Argent Fracture." Come Eternal it's revealed he may in fact be the lost A.I. god of the Maykrs.
  • Gender-Blender Name: Vega is normally presented as a girl's name, but this VEGA has a masculine voice.
  • Heroic Sacrifice:
    • Allows the Doom Slayer to destroy him in order to open a portal to The Well so that he can shut it down.
    • In Eternal, he does it again, this time seemingly for good as he is required to create an exit portal from Urdak back to Earth once the Slayer's rampage there is complete, and he is now in control of the entire Maykr realm.
  • I Cannot Self-Terminate: Which makes sense — VEGA is just an AI with no limbs or otherwise physical means of destroying his own neural processors, or blowing up his cooling tanks. Even so, he dutifully directs the Doom Slayer to do these things fully aware that these actions would destroy him.
  • I Regret Nothing: Subverted. Right before VEGA completely melts down, he says "I have many regrets", presumably for playing a part in the UAC's monstrous activities.
  • Meaningful Name: Vega is the name of one of the brightest stars in the sky, which is used to navigate the world at night. In this game, VEGA serves as the Doomslayer's guide and companion.
  • Mysterious Past: In 2016, VEGA is an artificial intelligence that was supposedly created by the UAC, but the exact details were unspecified. It's notable given VEGA is Samuel's equivalent of a personal right-hand man. In Eternal, when he's plugged into the mainframe of Urdak, the Maykr homeworld, he asks if he's "The Father", referring to the seeming god that the Maykrs had followed before its mysterious disappearance. The game never answers if this is simply the effects of the interfacing, or VEGA was formerly the Father as an AI system swiped by Samur the Seraphim.
  • Not Quite Dead: The Doom Slayer makes a backup of him before going through with destroying him.
  • The Smart Guy: VEGA comes up with all the ways you can improve your suit and weapons.
  • Token Good Teammate: To the UAC. Samuel Hayden is a Well-Intentioned Extremist who was willing to sacrifice everything (including his own employees) for "the betterment of mankind", and Olivia Pierce turned out to be a Not-So-Well-Intentioned Extremist whose sole drive was to obtain godlike power. VEGA, on the other hand, is thoroughly polite and patient with the Doom Slayer and performs a Heroic Sacrifice to stop Olivia (albeit with the Doom Marine's help).
  • Wham Line: In Eternal, potentially throwing its entire purpose in the plot on its head.
    VEGA: Am I... the Father, Dr. Hayden?

    Abraham Peters 
The protagonist of Doom VFR. A scientist for the UAC who had been protected from the initial wave of demonic energy that Olivia unleashed, only to be torn apart by a Pinky after stepping off an elevator. However, a top-secret UAC protocol caused his consciousness to be digitized, allowing him to download himself into a combat-ready chassis and get to work containing the demonic presence.
  • Brain Uploading: The first man since Samuel Hayden to undergo the process.
  • Bullet Time: Can alter his perception and reactions to slow down time around him.
  • Came Back Strong: Doesn't get much stronger than going from a throwaway corpse set-piece to pulling off feats of demon-slaying almost on par with the Slayer.
  • Dual Wielding: Can utilize a full arsenal in his right hand, and a grenade launcher in the left.
  • Early-Bird Cameo: Peters actually appeared in Doom (2016) ahead of VFR, as the upper half of a corpse that the Slayer had to pick up to access the BFG.
  • Heroic Mime: Averted; Dr. Peters muses to himself on a semi-consistent basis about what he has to do next.
  • Unskilled, but Strong: While he's a mere scientist with at most a few minutes of virtual training to acclimate himself to his new body, that body is of a combat cyborg and contains a plethora of features to augment his more strategically-inclined mindset.
  • One-Man Army: Though he doesn't take on odds quite as heavy as the Doom Slayer, he proves his mettle by fighting through the forces of Hell on his own terms, eventually taking on a long-thought-lost prototype of the Cyberdemon to acquire its Argent Accumulator.
  • "Shaggy Dog" Story: Just after closing the portal as he had intended, Samuel Hayden overrides his access to the combat body and deletes his consciousness for "causing problems".
  • Tele-Frag: His substitution for Glory Kills; once an enemy is staggered, he can lock onto their position and teleport into them to instantly gib them.
  • Teleport Spam: Capable of this due to a special feature of his combat body.

    UAC Spokeswoman 
A holographic woman who actively supports the demonic invasion of Earth, spewing Pro-Hell propaganda and encouraging mankind to roll over and die for their new masters.
  • Ambiguously Human: It's unclear if she's supposed to be some kind of AI or a human cultist who made some pre-recorded lines for general broadcast (though the fact she seems aware of current events suggests against the latter). Considering the unholy tide of supernatural phenomena ravaging the Earth by this point, she may even be Haunted Technology.
    • One ARC broadcast indicates ARC has undercover operatives within the Demonic Cult, implying that the Cult faction of the UAC somehow still has some untransformed human members. Thus, the Spokeswoman may simply be an ordinary Quisling.
  • Bad is Good and Good is Bad: "Remember, no one is born a sinner. You have to work to achieve success."
  • Dissonant Serenity: Is relentlessly cheerful when describing the horrifying "benefits" the demons offer to mankind. Even when she openly taunts people for putting their faith in the Doom Slayer, she sounds more teasing than overly snide.
  • Faux Affably Evil: Is cheery, polite and snarky, as she calls for humanity to die screaming at the hands of Hell itself, sometimes while gloating about how no one is coming to save them. It's far more clear in Eternal, when there is no reason to even pretend that the UAC have anything in mind but selling Earth to the demons, and gets more and more evident over the course of that game.
  • Political Correctness Gone Mad: She says it's rude to call The Legions of Hell "demons" and that you should call them "mortally challenged." Amusingly, the demons themselves seem to use this terminology, or at least the ones operating under the authority of the UAC Cult and Deag Priests do. Indeed, even the unambiguously Anti-Demon ARC News agency defaults to this term (at least until the end of the game).
  • Right for the Wrong Reasons: As part of her 'Demons are our friends' shtick, she spouts several lines about how people should accept the demons because they are Not So Different from humans. It comes off as Political Correctness Gone Mad, but given how demons are humans tortured past the Despair Event Horizon, she is technically correct.
    Spokeswoman: "There is no 'they', for 'they' are 'us', and 'we' are 'they'."
    Spokeswoman: "Evolution is our destination, when they arrive, we arrive".
  • The Quisling: She's not shy about playing favourites for the demons.
  • Tokyo Rose: Her entire purpose is to spout pro-demonic propaganda at the remnants of humanity.
  • Understatement: When the Doom Slayer arrives on Earth to destroy the Super Gore Nest, she remarks to potential passers-by that "you might notice a slight change in the environment." You're immediately treated to a ruined city filled with lava, giant tentacles, and Meat Moss.
  • Villainous Breakdown: Finally snaps when the Doom Slayer is closing in on the Icon Of Sin, screaming out of desperation and frustration at the demons present to kill him.
  • What Happened to the Mouse?: She's never heard from again after her last Villainous Breakdown, barring canned dialogue.


    In General 
A global military crisis-relief initiative formed by the Allied Nations to combat the Hell invasion, the Armored Response Coalition fought hard to protect Earth against the demonic hordes, but are on the brink of collapse by the start of DOOM Eternal.
  • The Alliance: Made up of the militaries of every surviving nation-state.
  • Defector from Decadence: The ARC's technological backbone is made up of UAC assets that have not fallen to demonic corruption, not least of which is Dr. Samuel Hayden himself.
  • Fun with Acronyms: Armoed Response Coalition, ARC, as in, Noah's ARC.
  • Humongous Mecha: The ARC built several building-sized mechs to combat the demons; you can find their wrecks strewn all across the first level.
  • Redshirt Army: They may have fought bravely, but it's made starkly clear that the ARC's forces are ultimately no match for the armies of Hell.
  • La Résistance: They are formed from Earth's defense forces ravaged by Hell's armies.
  • United Nations Is a Superpower: The Codex states that the Allied Nations functions as basically a single world government.
  • Voice of the Resistance: The Doom Slayer can listen to ARC broadcasts which provide information and news to survivors scattered across Earth.


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