History Characters / Doom2016TheDoomSlayer

* EveryoneHasStandards: He may be a brutal, gun-toting and destructive maniac that inflicts enough pain upon the denizens of Hell to become their boogeyman, but he wants to protect humanity from the invasions, thus mostly intimidating those that stand in his way rather than going in with violence. He's also willing to [[spoiler:spare VEGA with a backup copy in a proposed HeroicSacrifice for the AI, all on his own inclination,]] and doesn't pick a fight with those that aren't gunning for him, no matter how much contempt he has for the likes of Samuel Hayden.

* ElectiveMute: ''Doom Eternal'' notes that he’s fully capable of speech, but stopped doing so after gaining his enhanced power. Apart from grunting whenever he's hit in ''Eternal'', he’s been completely silent for millennia, [[spoiler:and it takes the Dark Lord's demise for him to say a ''single word''.]]

** The intro of the DOOM (2016) is one for the Slayer: He wakes up naked and chained to a slab after Hell's forces sealed him in a coffin and [[ThereIsNoKillLikeOverkill dropped an entire temple on top of him]] just to be safe. The ''instant'' he's awake and aware, [[RatedMForManly he rips out the chains, smashes a zombie's head to paste with his bare hands, and blasts two others to pieces with a pistol]]. He then finds his armor and immediately searches for the source of the demonic infection on Mars. When interrupted by Samuel Hayden's [[TeethClenchedTeamwork offering of help]], he spitefully throws the monitor against the wall and leaves. After which he goes on to clear another room full of demons. And the moment that [[MrExposition Samuel Hayden]] tries to justify what's happened to the base by saying that his actions were for [[WellIntentionedExtremist "the betterment of all mankind"]], the Doom Slayer looks down on a human corpse, gets enraged by it and [[ShutUpHannibal destroys the monitor]] Hayden's speaking on. This establishes the Slayer as a ruthless Badass NoNonsenseNemesis (to the Demons) who still retains some of his humanity.

* AnthropomorphicPersonification: In ''Doom Eternal'', Dr Elena Richards (A UAC scientist trying to figure out who/what the Doom Slayer is) gets a crisis of faith, wondering if the Doom Slayer is an agent of God, or some sort of divinity himself. After seeing footage of him singlehandedly overturning Hellish hordes that Earth's greatest weapons could do nothing about, and noting how he's [[TheDreaded the only thing the demons truly fear]], she concludes that he must be this. Once a man, now the literal embodiment of Doom.

* ExplosivePunch: The "Blood Punch" has Doomslayer strike with a ton of built up energy, resulting in a blast that can one-shot most basic enemies. It can only be used once he's charged up enough energy by performing Glory Kills.

* CanonName:
** As has been slated on multiple occasions in statements made by Id Software since ''Doom'' of 2016, [[spoiler: Doomguy is a direct descendant of the Blazkowicz bloodline.]] Now, whether or not that means it's the same as [[spoiler: in the Doom RPG titles, William Joseph "BJ" Blazkowicz III,]] hasn't been stated assuredly, but the family name at least is concrete.
** While it's from an EasterEgg that doubles as a CallBack, [[spoiler:considering all the strides taken to meld every ''Doom'' entry as part of the same universe, [=FLYNNTAGGART=] being the password to unlock ''Doom [=II=]'' in-game suggests that the Doom Slayer might use the name he has in the novels, Flynn Taggart, as an alias]].
** Lore entries give his Super Shotgun canonical nicknames by the forces of Hell, akin to dubbing the protagonist the Doom Slayer, [[NamesToRunAwayFromReallyFast Lucifer's Bane, and the Diabolical Musket]].
** With confirmation from ''DOOM: Eternal'' that he's [[spoiler: related to Commander Keen]] and that he's [[spoiler: the Doomguy from the original series,]] it's safe to assume that his name is either [[spoiler: William Joseph "BJ" Blazkowicz III or Stan Blazkowicz]].
** Word Of Romero [[https://twitter.com/romero/status/1314667748769910784 says]] his name is [[spoiler: [[HisNameReallyIsBarkeep Doom Guy]]. (Although, of course, it's been hundreds -- possibly thousands -- of years since he was just a marine stationed on Mars, so he may very well have long since forgotten, or [[ThatManIsDead simply no longer identifies with]], the person he originally was.)]]

'''The Doom Slayer''' | [[Characters/Doom2016Demons Demons]] ([[Characters/Doom2016TheDarkLord The Dark Lord]]) | [[Characters/Doom2016UACAndARC UAC and ARC]] | [[Characters/Doom2016MaykrsAndArgenta Maykrs and Argenta]] -]]]]]

'''The Doom Slayer''' | [[Characters/Doom2016Demons Demons]] | [[Characters/Doom2016TheDarkLord The Dark Lord]] | [[Characters/Doom2016UACAndARC UAC and ARC]] | [[Characters/Doom2016MaykrsAndArgenta Maykrs and Argenta]] -]]]]]

'''The Doom Slayer''' | [[Characters/Doom2016Demons Demons]] | [[Characters/Doom2016UACAndARC UAC and ARC]] | [[Characters/Doom2016MaykrsAndArgenta Maykrs and Argenta]] -]]]]]

** It's Played With, however, in regards to his sense of humour and soft spots. Even years dead at the hands of Hell, he still memorializes [[spoiler:his pet rabbit Daisy]]. He collects toys and screws with people who are rude to him nonviolently. He truly enjoys his work and has fun with it. And of course, he loves to troll a giant robot scientist by doing things only in ways that horrify him.

* TheAgeless: Despite having fought in the ancient wars on Argent D'nur, the Slayer still appears to be in his physical prime. The Khan Maykr even calls him '''once'' a mortal', implying that [[spoiler:either his exposure to Hell energy or the Argent infusion done by Samur]] halted his aging. Taken even further in that he's [[spoiler:the Doomguy from the original games]], and thus has stayed in relatively-young adulthood for bare-minimum one hundred and fifty years. And given the demons' claims he was there "In the first age, in the first battle, when the shadows first lengthened" and "The scribes carved his name deep in the tablets of Hell across eons", that really is a ''bare'' minimum.

* BookEnds: ''VideoGame/Doom2016'' opens with [[{{Epigraph}} an excerpt from a fictional text]], and the first shot of the game is of his glowing red mark on the lid of his opened coffin. [[spoiler:''VideoGame/DoomEternal'''s ''The Ancient Gods: Part Two'' ends with the Slayer lowered into a coffin after killing the [[BigBad Dark Lord]], with the stipulation that [[KeystoneArmy every demon outside of Hell will die if Davoth is defeated]] apparently extending to the Slayer as well, and the same Slayer's mark can be seen on the lid of the coffin as it is slid into place. Plus, after the camera zooms out to show the Slayer's final resting place, the screen fades to black and displays the following text, the last part of the first game's {{Epigraph}}, to symbolize that his crusade against Hell is now finally complete:]]

** The Doom Slayer's response to finding a tiny action figure recreation of himself? Give the little dude a fist-bump, wiggling his fingers as he pulls his hand back.

** Lore entries in ''Eternal'' indicate that, at the very least, he regards VEGA with a certain amount of respect, dedicating part of his time to improving the program's functionalities. The fact that he thought to save a backup copy of VEGA in ''2016'' is a hint to his HiddenDepths.
** When interacting with characters who aren't aligned with demons but have something he needs, he'll make sure not to hurt a hair on their head (like that guy with the key-card on the BFG 10K station), at most just firmly wrenching what he needs out of their hands and moving past them (the guard with the Plasma Rifle who he ends up yanking it away from). This goes to show that, for all of his rage and brutality against the demons, he will NOT harm an innocent if he can help it. WordOfGod says that he goes out of his way to ensure that "nerds" such as the scientist with the key-card are not harmed, at most threatened by his actions and presence, while "jocks" like the guards get harsher but still non-lethal treatment.

* TheChosenOne: The Doom Slayer was not someone born of high status or legendary repute, instead earning his reputation as TheUnchosenOne. However, his undying rage caused him to be selected by the Seraphim to hold the battle against Hell where no one else could. Even the reveal that [[spoiler:he's the original Doomguy]] only further cements that he ''became'' chosen rather than being born it. [[spoiler:However, the revelation that the Dark Lord of Hell itself is effectively an AlternateSelf heavily implies that regardless of the timeline, the Slayer is an essential and significant existence.]] ''The Ancient Gods - Part Two'' expands on this and reveals the truth: [[spoiler:the Dark Lord is really [[{{God}} the Father himself]], and the Doom Slayer was a human recreation of him thrown out into the multiverse as part of a long, ''long'' cosmic plan of vengeance. Though the Slayer gained will of his own, he still fulfilled all of the plans of destroying the Dark Lord's enemies in the end, complete with the Divinity Machine holding a fragment of his power that got transferred over. In essence, the Slayer is ''the'' chosen one who stumbled into his divine role by pure happenstance, even if he eventually became an enemy of his own creator.]]

* CloseRangeCombatant: Despite being a literal Space Marine in a FPS, the Doom Slayer's playstyle rewards plunging into the fray. Even with his guns and grenades, his strongest weapons are often an [[ChainsawGood oversized chainsaw]], an [[{{BFS}} enormous sword powered by rage]] and his [[GoodOldFisticuffs own two hands]]. Killing demons with your chainsaw or melee finishing moves rewards you with ammo and health, and is often more efficient than shooting them to pieces, and entering a berserker rage where you can only punch makes you ''more'' dangerous than your rifle or pistol. Add to the fact that there's limited cover and the hordes of Hell are devilishly fast and can often teleport, and even with guns you'll find yourself shotgunning your foes from the hip rather than sniping them down your sights.
* TheComicallySerious: He's silent, incredibly angry and is unbelievably violent. However, there is some humour from those aspects of him and what he does, from collecting Doom Guy Dolls, fist-bumping one and in ''Eternal'' clearly having no care for personal space. If the player is having him wear the [[SillinessSwitch Doomicorn]] armour, he still looks permanently pissed-off and strikes powerful poses, but the goofy white-and-pink armour makes him all but unable to be taken seriously.

** His default expression is just a piercing glare at whatever pisses him off. He amps it up on several people who have earned a higher spot on his shit-list, and in response to anyone trying to convince him to give up on his quest.

* DidYouJustPunchOutCthulhu: He's taken out demon lords as big as mountains, killed near-indestructible monsters, and faced down generations of the legions of Hell with little more than guns, blades and in many cases his bare hands. Come ''Eternal'', he's added [[spoiler:an alien god and her questionably-angelic minions]] to that bodycount, and in ''The Ancient Gods'' he sets his sights on [[spoiler:the Devil himself. By the end of ''Part 2'', he does.]]

* DropTheHammer: In ''The Ancient Gods: Part Two'', he gets a Sentinel Hammer from Valen, replacing the Crucible. He uses it by leaping high and smashing the ground, dazing nearby enemies. It ends up having a lot more utility than the Crucible, as it stun enemies in a wide area, make demons' staggered state last even longer, makes frozen/burning targets drop more armor and health, and in general has much more versality compared to the Crucible's singular one hit kill function.

** The intro of the DOOM (2016) is one for the Slayer: He wakes up naked and chained to a slab, after Hell's forces sealed him in a coffin and [[ThereIsNoKillLikeOverkill dropped an entire temple on top of him]] just to be safe. The ''instant'' he's awake and aware, [[RatedMForManly he rips out the chains, smashes a zombie's head to paste with his bare hands, and blasts two others to pieces with a pistol]]. He then finds his armor and immediately searches for the source of the demonic infection on Mars. When interrupted by Samuel Hayden's [[TeethClenchedTeamwork offering of help]], he spitefully throws the monitor against the wall and leaves. After which he goes on to clear another room full of demons. And the moment that [[MrExposition Samuel Hayden]] tries to justify what's happened to the base by saying that his actions were for [[WellIntentionedExtremist "the betterment of all mankind"]], the Doom Slayer looks down on a human corpse, gets enraged by it and [[ShutUpHannibal destroys the monitor]] Hayden's speaking on. This establishes the Slayer as a ruthless Badass NoNonsenseNemesis (to the Demons) who still retains some of his humanity.

* FeaturelessProtagonist: You never get a good idea of what his face looks like. However, you can kind of see his facial features through the helmet's visor, and he does have a face texture, which some [[https://www.reddit.com/r/Doom/comments/5l8p1o/doom_guys_face_doom_2016/ fans were able to rip]]. In-engine cutscenes that leave the Doom Slayer's perspective shows that his visor is more transparent, with his eyes becoming more prominent. In ''DOOM Eternal'', his face is far more visible, most notably when it's reflected in his visor after obtaining a power-up. In one cutscene, he is also shown without his helmet, at least from behind. [[spoiler:{{Averted}} come ''Eternal'', both because we see his face at several points, and because [[CanonCharacterAllAlong we've known what]] [[{{VideoGame/Doom}} it looked like since 1993]], and even further averted in ''The Ancient Gods'', where he removes his helmet before killing Davoth]].

* GeniusBruiser: In addition to his enormous build, he's also well-read, an avid gunsmith, a capable leader of armies, highly competent and out-of-the-box strategist and able to perform maintenance on an AI.

* GentleGiant: Yes, this is actually played straight insofar as human innocents are concerned. When he arrives on Phobos the Slayer walks through a control room on filled with UAC employees. When he needs a keycard that's on a lanyard hung around a scientist's neck the Slayer takes the card (while it is still hung around the employee's neck) and uses it on the nearby control panel to open the door, gently but firmly dragging the poor fellow along by his neck in the process. It's a remarkable amount of restraint and awareness from someone strong enough to snap the poor guy's neck like a twig even by accident. The developers have stated that he is a lot more gentle around "nerds," trying not to harm them even if he wants to be firm, while "jocks" get harsher treatment which, even then, is limited to him snatching a guard's Plasma Rifle for no reason.

* HeroicBuild: Eons spent ripping and tearing through the forces of Hell has left him seriously ''ripped''.
* HeroicComedicSociopath: The majority of his violent or thoughtless actions are played for laughs rather than any kind of drama: He murders demons in various ridiculous and inventive ways, usually just goes for "smash it in with your hands and feet" when dealing with UAC equipment, drags around technicians by the keycards attached to their necks or just slings their half-eaten corpse over his back if they're already dead, and gleefully steals weapons from random corpses and even living guards.
* HeroicMime: As usual, he never speaks - his actions tend to speak louder than words, though. However, pained grunts upon taking damage can be heard from in ''Eternal''. [[spoiler:Played with when {{Flashback}}s show him [[SuddenlyVoiced fully capable of talking, with a codex entry stating that he simply chose to stop speaking]], so in reality, he simply ''refuses'' to speak, given how dead focused he is on his work. ''The Ancient Gods Part 2'' showcases this as he utters a single "No", when the Dark Lord asks him if he has any PreMortemOneLiner]].
* HeroicSecondWind: His extra lives mechanic in ''Eternal'' is described InUniverse as such - even after nearly being killed by a pack of demons, the Doom Slayer's forcing himself back up with pure anger and willpower to keep fighting.

** He's also surprisingly [[GeniusBruiser adept with technology]] (when he's not ''intentionally'' destroying it), given how long he may have been fighting in Hell. He only ever hesitates on his options for VEGA, and otherwise seems to speed through numerous options and activation with no real difficulty. Even on Olivia's personal and top-secret computers, he doesn't waste a second on any single option each as he picks through them to unlock what he needs. The interfaces may be user-friendly, but he clearly knows what he's doing.

** Despite having him at his complete mercy and generally not being inclined to let him get off easy for picking a fight with him, [[spoiler:he ends up sparing Samur Maykr after hesitating and being told by the Father that killing him isn't necessary. He may hate him for being a massive pain in his ass throughout the entirety of 2016, but the Doom Slayer is indeed capable of mercy toward someone he does not like at all, provided said someone isn't a demon or demonic.]]
* HopeBringer: Come the events of ''Eternal'', the Doom Slayer is a figure ShroudedInMyth to most of humanity, though his reputation and the tales of his exploits on Mars preceded him. The ARC and those living under its protection come to see him as a savior and protector, even if his violent tendencies do give them cause for concern. Regardless, his new conquests on Earth gradually embolden the resistance and inspires hope into them, as they watch him wreaking havoc from afar. [[spoiler:He also became one to the people of Argenta as conscripts saw one of their own not only becoming a Sentinel but one of the best when it comes to killing demons.]]

* ImplacableMan: The Slayer cannot be reasoned or bargained with. He could at best be mildly slowed down and inconvenienced, by pitting him against innumerable hordes of demons, and he'd still be coming for your skin eventually. It's why he so damn feared among the demons - no matter what they throw at him, he'll overpower it in some way.

* JerkassToOne: Right off the bat in ''DOOM (2016)'', he seems to develop an instant and almost unreasonable hatred for Samuel Hayden the second he hears that Hayden is the head of the facility, particularly when he hears that Hayden believes the horrific loss of life caused by dealing with Hell was "worth the risk" for its rewards. Almost every time he has to deal with Hayden, the Slayer will either violently cut off his transmissions, or deliberately smash the expensive stuff he's explicitly told to keep intact as if to rub it into Hayden's face. On the other hand, once he figures out just what the UAC is up to, it makes total sense that he'd want to shut their operation down, [[spoiler:since he [[SoulPoweredEngine already knows exactly what Argent Energy is and how it's made]], and Hayden makes it very clear that shutting it down is not in the cards for him]]. ''Eternal'' shows that he's still more than a little contemptuous at Hayden; when recovering the doctor's shattered chassis, rather than carefully detaching it like the ARC scientist advises him to, the Slayer just nonchalantly yanks him out of his life support systems instead, which makes his entire chassis fall and slam resoundingly against the floor. As if that's not enough, as soon as the Marauder rocks up to the scene, the Slayer just casually flings what's left of Hayden into a portal without even looking.

* KnightInSourArmor: One interpretation of his behavior; he may not be the [[TranquilFury most calm]] or [[RoaringRampageOfRevenge peaceful]] person around, but he still fights for what he believes in and against Hell. His unbridled rage at the UAC shows a cynical and bitter side, and yet his team up with Hayden also shows he'll put it aside on a whim for the greater good of stopping Hell again.

* MessianicArchetype: ''The Ancient Gods - Part Two'' reveals him to be a messiah figure. The beginning of the base game is his second coming, his return to Earth shows he's become a HopeBringer, his ArchEnemy is the devil, and [[spoiler:he was created directly by God in His own image]].

* MultiMeleeMaster: Adept with a wide range of close-combat techniques and weapons, including his hands, feet, PistolWhipping, a forearm mounted blade, chainsaws, a giant laser greatsword, and even random dismembered demon body parts. Make no mistake, if he can wield it in his hands, he's likely to find a way to use it for demon slaughter.

* MultipleChoicePast: In ''2016'', codex entries give few concrete facts about the Doom Slayer's origins, but plenty of WildMassGuessing fuel. Several references to the classic series enforce the fan theory that he's the Doomguy. However, there's also hints that the Doom Slayer was the last surviving member of the Night Sentinels, protecting the dimension that Hell completely subsumed. ''Eternal'' reveals that [[spoiler:both are true - he is Doomguy and the SoleSurvivor of the Night Sentinels]].

* NeverHurtAnInnocent: Doom Slayer despises demons, Hell, and anyone collaborating with either. He'll kill anyone that's been corrupted and turned like the Hell Priests or the Marauders. However, he's trying to save the earth as well and not just kill the demons, after all, if he was only concerned with killing the demons he wouldn't go out of his way to [[spoiler:stop the Maykrs from sacrificing the earth.]] He's trying to save humanity while also waging war against Hell and any time he interacts with normal people, he may be rude and scare the shit out of them but he won't hurt them. Best shown when he arrives on Phobos. Though he's somewhat rough with what he needs from them (a key card from an employee and a plasma rifle from a marine), the worst they get is mild discomfort and being left trembling in fear. Otherwise they're completely unharmed.

* NonstandardCharacterDesign: Despite the Slayer's Testament claiming "he wore the crown of the Night Sentinels", his armour looks utterly different from any other Night Sentinel you meet, even in scrolls depicting him fighting side by side with them. While they look closer to sci-fi versions of medieval knights in white armour, the Doom Slayer's suit looks closer to an Earth designed one reforged with Hell touches, and it's colored with nothing but greens, browns and greys instead.
* NotAfraidOfHell: Oh no. If the page up to this point didn't convince you that he's isn't afraid of Hell, it's time to reiterate. [[RussianReversal He isn't afraid of Hell. Hell is afraid of him!]]
* TheNthDoctor: [[spoiler: He rarely ever talks, but the two times he speaks are before and after his transformation into the Slayer. The first is his insane ramblings as played by Matthew Watterson, the second is his one word PreMortemOneLiner as Jason Kelley.]]

* OneManArmy: '''Oh boy.''' This guy is possibly this trope ''given physical form.'' For starters, he singlehandedly crushes the Mars invasion in a matter of hours almost entirely on his own, killing absolutely everything sent his way with extreme prejudice, including several of Hells strongest demons. In ''Eternal'', he's essentially the sole effective soldier in the fight against a planetwide invasion from Hell, and he brings ''that'' invasion to a halt in somewhere around the span of a day. No less than ''eight'' of the Video Game quotes on the trope page pertain to him, and he's earned them all.
* OnlySaneMan: It's quite clear he does not buy a single syllable of the shaky self-satisfied WellIntentionedExtremist malarkey the UAC keeps feeding him, because said malarkey is also what ''keeps on provoking demonic invasions.'' To him, there are exactly three things in the world: Kill demons, save the world, and do it as ''efficiently'' as possible.
* ThePaladin: He's the most exalted warrior of the Night Sentinels who are basically paladins [[RecycledInSpace but in another dimension.]] While he's a rather macabre take on this trope, he most certainly fits the general bill, what with his hatred for demons and his mission to repel the literal Legions of the Damned, to protect innocents from eternal damnation.

* RoadRunnerPC: One of the Doom Slayer's greatest strengths (second only to his SuperStrength) is his incredible vertical and lateral movement - It allows him to keep his engagements to the range that is most effective at dealing with the individual foes, dodge projectiles and {{Ground Pound}}s and then close in for a Glory Kill once an opportunity presents itself. A double jump and a short-range borderline FlashStep doesn't seem like the most useful abilities when staring down the demonic hordes, but one of the reasons Marauders are such absolute ''bastards'' to slay is because ''[[EvilCounterpart they can keep up]]''.

* ShoulderCannon: The Doom Slayer's upgraded Praetor Suit in ''Eternal'' now sports the Equipment Launcher on the left shoulder - a multipurpose ordinance delivery system capable of firing off a short-ranged Flame Belch, Frag Grenades and Ice Bombs.

* SilentSnarker: ''Eternal'' reveals that [[spoiler:as Doomguy, he was at least capable of speaking (although by the time the Maykrs found him, he was more or less reduced to reciting his MadnessMantra)]], but in the present-day, the Slayer does not speak a word, although he still grunts when hit. His actions and facial expressions basically do all the talking, such as him visibly having no patience for Samuel Hayden's tendencies to exploit Hell for resources and ForScience, and killing the Hell Priests mid-sentence. [[spoiler:According to the codex, he is still capable of speaking, but simply chooses not to.]]

* SmarterThanTheyLook: From a first glance, it's very easy to dismiss him as a violent halfwit who is extremely proficient at killing but clueless when it comes to everything else; however, paying attention to the lore in both games will paint a much deeper picture, explaining to his moments of apparent stupidity or thoughtlessness:

** When told that [[spoiler:Hayden's wrecked chassis]] needs to be carefully removed from stasis, he simply grabs it and hauls it into a portal. [[spoiler:Given that Hayden was undoubtedly a high priority target for the demons, the Slayer probably guessed that something would be coming to get him, and understood that taking the time to get him out was far more dangerous a proposition than just grabbing him. Sure enough, the Marauder rolls up to the scene literal moments afterwards. Additionally, Hayden's actions in the first game were TeethClenchedTeamwork at best, and outright betrayal at worst, so Hayden hadn't exactly given the Doomslayer reason to be gentle with him.]]

* SoleSurvivor: Regardless if he's from an AlternateUniverse Earth or Argent D'Nur originally, he didn't just lose the entire demon-fighting order he fought with, his entire ''homeworld'' was destroyed by Hell, leaving him seemingly the only one left. [[spoiler: [[SubvertedTrope Then it turns out there are surviving Night Sentinels.]] Unfortunately, [[FaceHeelTurn the ones that survived are working with the Hell Priests.]] ''The Ancient Gods - Part 2'' [[SubvertedTrope subverts this,]] as it turns out that are a fair few uncorruted Night Sentinels scattered around Argent D'Nur and they rally to help him assault Hell for the last time.]]

* SpannerInTheWorks: The empowering he underwent by the Seraphim as described in ''DOOM''? [[spoiler:That was actually one Maykr [[DefectorFromDecadence going against the Khan's wishes]] to create a reserve back-up plan in case things went sour. The Khan Maykr was displeased with this and exiled the Seraphim, but kept the Slayer around until he too [[YouHaveOutlivedYourUsefulness was in the way of her plans with Hell.]] What she didn't count on was his absolute refusal to die, which resulted in the long-term destruction of her plans from the inside-out.]]

* TheStoic: Though [[TranquilFury bubbling with rage on the inside]], outside he barely emotes outside of a grunt.

** In terms of gameplay, it's zig zagged in ''Eternal''. While he has substantially more options in his arsenal to play with, he starts with severely lowered ammo count, his basic punch has been inexplicably weakened (to the point that it barely hurts an ambient demon), and he takes more damage from attacks, practically forcing him to use those expanded options just to stay toe to toe with his opponents. However, he has his Combat Shotgun from the get go instead of the piddly little pistol he began with in ''2016''.

* UnscrupulousHero: He is extremely ruthless in combat and shows absolutely zero mercy... if you’re a [[AlwaysChaoticEvil demon]] or working with them. Otherwise he still has NoSocialSkills but is still fighting for the good of mankind.

** The Doom Slayer will stop at nothing to stop the forces of Hell from consuming another world, even if it means undoing any good the UAC could have done with [[{{Unobtainium}} Argent Energy]]. Earth is stated to be suffering from a serious energy crisis, but the Slayer doesn't care, or doesn't think the UAC can keep the evil in its can forever. Come ''Eternal'', he's [[HellOnEarth proven right]].
** Come the ''Ancient Gods'' DownloadableContent, he ends up both [[spoiler:destroying the Father's life sphere and screwing over Samur the Seraphim, as well as going out of his way to personally resurrect Davoth the Dark Lord]] just to make sure he both doesn't get screwed over himself and can finally end everything by killing the latter. [[spoiler:Despite awakening what seems to be an EvilCounterpart to himself, with the implication the Dark Lord's mere physical existence will make everything worse, and he just burned his bridges with all but a single lone UAC intern still willing to help him, it might appear he just bit off more than he could chew; but ultimately at the conclusion of Part II, he ''succeeds''.]]

* ZeroApprovalGambit: In ''Eternal'', [[spoiler:before the Gladiator boss fight in Sentinel Prime, Deag Grav informs the Slayer that if he kills him as he did the other Hell Priests and thus spills Sentinel blood within the city, he'll lose all of his sovereignty and respect among the surviving Night Sentinels. The Slayer isn't fazed by this and, in the aftermath of the fight, kills him anyway with a Super Shotgun blast that blows his head into chunks. As soon as this happens, several Night Sentinels run into the arena he's in, slowly inching closer towards him as their now red-tipped spears point in his direction-- a clear sign that they no longer tolerate his presence. The Slayer simply leaves, no doubt believing that putting a dent in Hell's invasion of Earth was well worth the cost of his goodwill with the Sentinels. However, given that these are the same Night Sentinels who willingly sided with the Khan Maykr even after learning of her pact with Hell, it's likely that he doesn't really care if they respect him or not]].

* GentleGiant: Yes, this is actually played straight insofar as human innocents are concerned. When he arrives on Phobos the Slayer walks through a control room on filled with UAC employees. When he needs a keycard that's on a lanyard hung around a scientist's neck the Slayer takes the card (while it is still hung around the employee's neck) and uses it on the nearby control panel to open the door, gently but firmly dragging the poor fellow along by his neck in the process. It's a remarkable amount of restraint and awareness from someone strong enough to snap the poor guy's neck like a twig even by accident.

* HeroesPreferSwords: His weapon from Argent D'nur, the Crucible, is a massive LaserBlade greatsword.

* BadassBaritone: As evidenced by [[spoiler:flashbacks of his time in Argent D'Nur and [[https://www.youtube.com/watch?v=8jPPHxAYWwQ cut voice lines]], he has a deep voice on par with ''Samuel Hayden's''.]]

* BroadStrokes: The "Slayer's Testament" from ''2016'' implies he was involved in at least a version of the events of ''Doom'', ''Doom II'', and ''Doom 64'', in something the demons refer to as the "first age". Whether it was actually him in those games, or he just had similar adventures, is never made clear though, [[spoiler:until ''Eternal'' confirms he and Doomguy are the same, tying their stories together]].

* GoodColorsEvilColors: His armour is a mix of earthy greens, greys and browns, compared to the demons' predominately red and yellow bodies that evoke fire and blood. [[spoiler:To finalize the trope, the Dark Lord's armor also has a red-yellow color scheme.]]

* MultipleChoicePast: In ''2016'', codex entries give few concrete facts about the Doom Slayer's origins, but plenty of WildMassGuessing fuel. Several references to the classic series enforce the fan theory that he's the Doomguy. However, there's also hints that the Doom Slayer was the last surviving member of the Night Sentinels, protecting the dimension that Hell completely subsumed. [[spoiler:''Eternal'' confirms both are true - he is Doomguy and the SoleSurvivor of the Night Sentinels]].

* GeniusBruiser: In addition to his enormous build, he's also well-read, an avid gunsmith, a capable leader of armies, and able to perform maintenance on an AI.

* EvilIsNotAToy:

** When interacting with characters who aren't aligned with demons but have something he needs, he'll make sure not to hurt a hair on their head (like that guy with the key-card on the BFG 10K station), at most just firmly wrenching what he needs out of their hands and moving past them (the guard with the Plasma Rifle who he ends up yanking it away from). This goes to show that, for all of his rage and brutality against the demons, he will NOT harm an innocent if he can help it.

* AsskickingEqualsAuthority: [[spoiler:The surviving Night Sentinels regard him as their king since the Night Sentinels naturally select the most badass FrontlineGeneral in the eternal war against demons as the one most fit to rule]].

* HeroesPreferSwords: His WeaponOfChoice from Argent D'nur, the Crucible, is a massive LaserBlade greatsword.

* WeaponOfChoice: If both covers of the game are anything to go by, the Doom Slayer's weapon of choice is the double-barreled Super Shotgun. Both this and the regular Combat Shotgun are mainstays in the Doom Slayer's arsenal.

* OneManArmy: '''Oh boy.''' This guy is possibly this trope ''given physical form.'' For starters, he singlehandedly crushes the Mars invasion in a matter of hours almost entirely on his own, killing absolutely everything sent his way with extreme prejudice, including several of Hells strongest demons. In ''Eternal'', he's essentially the sole effective soldier in the fight against a planetwide invasion from Hell, and he brings that invasion to a halt in somewhere around a couple of hours. No less than ''eight'' of the Video Game quotes on the trope page pertain to him, and he's earned them all.

* AntiChrist: [[spoiler:The Khan Maykr and her forces were duped by the Dark Lord into believing that there was a mysterious traitor known as the "Beast" in their midst that would bring ruin to their existence. The Slayer's actions certainly did cause it, [[SelfFulfillingProphecy because they made him their enemy by betraying him and attacking Earth.]] However, the Maykrs were in an unholy union with Hell itself, making the whole Anti-Christ role necessary in the first place.]]

* {{BFS}}: His WeaponOfChoice from Argent D'Nur is the Crucible, a LaserBlade greatsword.

** Has [[IHaveManyNames many]] [[DarkAgeOfSuperNames simple, yet gritty names]], NoSocialSkills, [[AxCrazy a penchant for grievous bodily harm, often using his own bare hands]], [[TheDreaded a threatening presence to both humans and demons alike]], and a simple, yet effective KillEmAll strategy to handling demons and their tech using an [[{{BFG}} oversized]] [[HyperspaceArsenal arsenal]]. He could just as well have been a villain if not for [[IncorruptiblePurePureness his solid moral centre]] underneath the anger and, come ''Eternal'', [[TheExtremistWasRight how it's really hard to disagree with his stance on meddling with the demonic]].

* DeityOfHumanOrigin: [[spoiler: Demigod, for lack of better classification, at any rate.]] He was an entirely mortal being at first, [[spoiler: and human to boot,]] but that all was tossed to the wayside [[spoiler: when Samur, the Seraphim of Urdak, used the chamber meant to purge impurities to infuse Doomguy with Maykr genetics, the Maykrs themselves being the angel race of the Doom reality.]] As a result, he no longer ages, his physical ability is ''well'' beyond normal capability, the Kahn Maykr outright states that he's no longer mortal either, [[spoiler: but an examination of a blood sample recovered from him on Mars does confirm that, for the most part, he is still biologically human.]]