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Fanfic / Remnant Inferis: DOOM

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There's going to be a lot more of the color red in this picture momentarily...note 

She is purity, defiance, righteousness, strength...
They are rage, brutal, without mercy...
But You, You will be worse...
Rip and tear...
Until it is done...
Intro to Remnant Inferis: DOOM

Remnant Inferis: DOOM is a Fusion Fic between RWBY and Doom (2016) written by GamerJay.

Taking place shortly after the events of Doom (2016), our Anti-Hero, the Doom Slayer, is transported to Remnant, a world besieged by the Creatures of Grimm, their mysterious creator and her minions, an organization of half-animal militant supremacists and evil corporations that just can't help but mess around with the unknown.

Oh, yeah...and The Legions of Hell that have seemingly followed him to this new and dangerous frontier.

Surrounded on all sides, the Doom Slayer strikes back the only way he knows how...

…and hopefully not blow up what's left of the planet in the process.

Now has a side-story one-shot titled Taurus, focusing on Adam's insanity and PTSD from his encounter with the Slayer.

The story later received another side-story one-shot in the form of Ace, which shows the perspective of the Ace Ops and General Ironwood during the horrors of the demon invasion.

Remnant Inferis: DOOM provides examples of:

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    A - D 
  • Abusive Precursors: It's hinted by Ozpin at the end of the Kingdom of Tyrants arc that the Kingdom of Immora, aka the First Kingdom of Jekkad, was this.
  • Acceptable Breaks from Canon: Rather understandable most times considering the time the story was first being published.
    • Since the story predates DOOM Eternal's release, there are differences between this fic and the canon games, such as the Doom Slayer being the son of Doomguy and not Doomguy himself.
    • Early on, Salem displayed powers and abilities she never had canonically, such as the ability to manipulate and control memories. However, this is due to said chapters where she displayed these powers having been published before her full backstory in V6 was shown, which also fully established what her abilities were.
  • Adaptational Early Appearance: Because the story begins both before and during the events of Volume 1, many characters that first appeared in later Volumes make earlier appearances here. The same is said for the characters from DOOM Eternal, as this is set immediately after the events of DOOM (2016).
    • Ironwood appears in Chapter 2 before his Vol. 2 debut alongside Winter, who's first appearance here takes place before her Volume 3 appearance.
    • Deag Grav makes his debut in Chapter 5 while his first appearance was in DOOM Eternal. This also predates his canonical appearance since the chapter was made well before DOOM Eternal's previews came out.
    • Jacques first appears in this story around the end of the Volume 1 mark. He canonically first appeared at the end of Volume 3.
    • The Marauder first appears in Chapter 22 both before when he'd originally show up in the game and before the game itself.
  • Adaptational Villainy: The SDC in canon were a corrupt company, but said corruption wasn't really explored much in the main series. Here, they're pushed into Evil, Inc. territory. They've been shown torturing and mutilating Faunus of their animalistic features, testing their newly developed weaponry on them, and gassing them with pheromones to horrific effect. All of this to summon demons for experiments in the name of profit and prestige.
  • Adaptation Origin Connection:
    • Cinder's parents were demon worshipers who were killed by the demon they summoned. She also would have been killed had Salem not saved her.
    • Marcus Black, Mercury's father, is a demon cult leader and also played a role in turning Team GRVE to the demon's side.
    • It's revealed that the Slaves of Doom are actually former humans whose souls were fragmented by the Brother of Darkness when he wiped them all out, with the pieces warping into what they are now through pure unending hatred.
    • It's also later revealed and speculated on by VEGA that Atlas' advanced technology all stems from recovered and studied Sentinel technology from the exiled Argenta.
  • Alien Blood: Averted. The demons bleed the same blood as any other human or Faunus. This makes them very disturbing for the Beacon students to fight.
    Ruby (thoughts): Who would have thought demons could bleed so much. Or even bleed the red stuff at all.
  • All Deaths Final: Word of God states that when someone dies, they will stay dead. The most you can expect for them coming back is as a Possessed that the characters have to kill a second time.
  • Alternate Universe Fic: Given that the story began its writing before DOOM Eternal and before certain plot developments of RWBY came out, it falls under this for both series. Among the differences is the Doom Slayer being the son of the original Doomguy rather than both being the same person, Gretchen being Hazel's younger sister rather than his twin sister, and Dust being able to work so long as there is an atmosphere rather than only working in Remnant's atmosphere.
  • Always Chaotic Evil: The Grimm and Slaves of Doom are all shown to be ravenous beasts who only crave death and destruction for all life. While the Beastkin of Argent D'Nur are referred to as such, it's averted as Perenna (a rabbit beastkin) was kindhearted and a childhood friend of the Slayer, and multiple Beastkin are peacefully seen alongside many Argenta during a flashback to the Slayer's childhood at the Cathedral of Reflection.
  • And I Must Scream: After having their souls fractured by the God of Darkness, the humans were trapped in a state of endless suffering, where a single moment of pain seemed infinite and they fell for eternity until it stopped. Their pain and rage would shape the void they were trapped in, and Hell was born from the anger of the Slaves of Doom.
  • And Show It to You: Attempted by Team GRVE, who were told by the demons to "cut out [Ruby's] eyes and womb". They decide to tear out her womb first so that she can see it happen. Thankfully, the Beacon instructors arrive in time before they can do anything.
  • The Anti-Nihilist: Both the Slayer and team RWBY have suffered through the absolute worst the universe has to offer. Despite all this, they still try their damnest to make sure things work out for everyone.
  • Anyone Can Die: That's made abundantly clear in Chapter 15 when Fox is viciously offed by Deag Grav, and comes back as a Possessed the following chapter.
  • Apocalypse How: Somewhere around the Planetary-level is what will happen if the Slaves of Doom get their way. They've done this with Argent D'Nur (Though only with half of the planet) and even the Naruto world. Remnant is next.
  • Armor Is Useless: A complete aversion. Armor is routinely shown to be highly useful for survival. The Slayer's armor tanks several blows that would outright kill any normal Aura-enhanced human, and the students are given more practical combat armor as part of their uniforms. Even Ozpin's suit is lined with armor in the event he's caught off-guard, which protected him from an unexpected sword strike when he was trying to save one of his students. When Yang's Aura is completely drained, she would have been killed had she not been wearing her armor to tank the attacks she couldn't at the time.
  • Armor-Piercing Question: Weiss got angry at the Slayer for calling her father a "corporate asshole". He asks if her father isn't one, which Weiss really can't respond to.
  • Armor-Piercing Response: When Weiss derides Ruby for her childish attitude and refusal to grow up, Ruby lashes out, letting loose all the held up anger and trauma she's been hiding since the invasions started. Weiss can't give a clear response, and all she can do is walk off to clear her head.
  • Ascended Extra:
    • Professor Peach, who was only mentioned once in canon, appears in a minor supporting role and is actually the one behind the demonic attacks on Beacon.
    • Marcus Black only played a minor role in the series as a part of Mercury's backstory and was already dead by the time we see him. Here, he's a cultist, actually has a speaking role, and plays a key role in Team GRVE's Start of Darkness. This ends up going further as he's revealed to be the leader of the cults on Remnant.
    • Gretchen Rainhart was Hazel's beloved, deceased, little sister. Here, she's alive, well, leader of Team GRVE and a cultist.
    • Sienna Khan was killed by Adam in her first appearance in Volume 5 and wasn't expanded on until Adam's Volume 6 short. Here, she's given more development and teams up with the heroes after seeing that there are greater threats to the Faunus race than humanity.
    • Deag Nilox was unceremoniously killed not even a minute into DOOM Eternal. In this story, he lasts much longer and serves as part of the Big Bad Ensemble for the "Kingdom of Tyrants" arc.
    • Immora was the capital of Hell and the penultimate level in Doom Eternal's DLC. Here, it's a full blown kingdom from pre-history Remnant and is hinted at being the main source of everything that has gone wrong in the story.
  • Asshole Victim:
    • The White Fang members that the Slayer killed in the opening really had a gory death coming.
    • The Faunus racists that the cultists sacrifice also deserved their fate.
  • The Assimilator: The demons merge their bodies with the technology of the worlds they conquer. They've done so with UAC tech (thanks in no small part to the UAC's experiments on them), Atlas tech, and tried to do so with the Relic of Destruction to open another Hell portal to Remnant.
  • Awesome, but Impractical: In the Slayer's hands, his deadliest weapons (the BFG and Gauss Cannon) are Boring, but Practical. In a standard Remnant native's hands, they're this trope. Despite their destructive power, the sheer recoil generated by them is enough to kill anyone who fires them. Private Jessika Puce learned this the hard way.
  • Back-to-Back Badasses: The Slayer and Ruby during "The New World III" when fighting a horde of Grimm together.
  • Badass Family:
    • The Blazkowicz family is pure badassery. First there's the Doom Slayer, who's been mowing through demonkind for eons and has left them scared shitless. Then there's his father, the original Doom Marine who thwarted Hell's invasion during the events of the classic games. And then you have their ancestors, who tore through the Nazis and left the Reich terrified. That's not even getting into his mother's side of the family, who descends from the bloodline of King Ormero, aka the first king of Argent D'Nur.
    • The Rose/Xiao Long/Branwen family is another one considering that the two daughters are two highly skilled Huntresses-in-training who've built up a massive demon body count, their father has been protecting his home from berserk Grimm attacks alongside their pet dog, and Qrow mentored Ruby in wielding one of the most dangerous types of weapons on Remnant.
  • Beat Still, My Heart: Averted then played straight. The Broken-Horned Baron rips out its dead sibling's heart, but since it was already dead, the heart wasn't beating. Then the Baron harnesses and fuels the organ with demonic energy, making it beat again, thus playing this trope straight.
  • Beauty Is Never Tarnished: Averted. Yang ends up getting heavily slashed across the chest, which ends up leaving a scar. Ruby gets nicked across the face by the Marauder's Argent energy-axe, which leaves a cauterized cut. And the Slayer's body is riddled with all manner of scars and closed wounds, some of which date as far back as his early childhood like his left ear's torn off helix.
  • Because You Can Cope: A non-familial example. Despite the Slayer's close bonds with Team RWBY, part of why he's okay with causing Epsilon to burn down (thus effectively abandoning them and putting Remnant through even more pain than it was already in) is because, as VEGA put it, they'll survive. Qrow is quick to chew him out on this and that, no, they really can't cope with all the shit he's putting them through and they can only take so much. The Slayer even acknowledges that Qrow's likely right, but by then it's too late for him to stop.
  • Better to Die than Be Killed: Ironwood discovered that a team of Third-year students at Atlas were in league with Hell and were responsible for opening the Hell portal there. They willingly turned themselves in, but were discovered dead in their cells the next morning after swallowing their own tongues.
  • Beyond the Impossible:
    • Winter saw that the Grimm were very hesitant to fight the Slayer. She didn't even think it was possible for Grimm to feel fear.
    • The Slayer's rage is so immense that it sets off nearly every single Grimm on the continent.
  • Beyond Redemption: The SDC in Weiss' eyes. After seeing all the terrible things the company did under her father's nose, she ultimately decides that her family name and reputation isn't worth saving and disowns them.
  • BFG: Marcus Black saves Team GRVE with the use of one. Guess what? It was the Unmaker!
  • Big Brother Mentor: The Slayer has this dynamic with Ruby, treating her like a younger sibling (well as close as he can treat someone like a younger sibling) and teaching her how to properly fight.
  • Bittersweet Ending: The final chapter of the "Kingdom of Tyrants" arc ends this way, though it's more on the bitter side than the sweet side. In the end, Hell's advance is stopped once more, Merlot is killed, and the main characters come out alive, with Teams RWBY and SSSN getting to go home after all the horror they'd been through. However, Epsilon is destroyed and the fallout will bring death and ruin to the four kingdoms for years to come, with Watts being revealed to have wanted as much to happen to cripple Atlas, Raven Branwen has stolen the Relic of Destruction, Doctor Catrice is arrested for her aid in the Epsilon experiments despite her remorse and aid to the heroes, Davoth's revelations shake everyone's faith in Ozpin, and to top it off, the Slayer's actions have left him alienated from all his former allies and wanted dead by the entire world, leaving him stuck in Mistral to continue his eternal crusade alone.
  • Black-and-Grey Morality: Two different examples in both the main story and in the past.
    • The Hero is a violent, murderous, nigh-unkillable jerkass ancient warrior who causes monsters that feed off negativity to swarm him due to his almost infinite rage, but the bad guys are genocidal world-conquering eldritch abominations that possess people, turn them into monsters, ally themselves with the absolute scum of the world, and slaughter the innocent just because they can.
    • The early conflicts that shaped Hell can be summed up as "evil vs. pure, heartless evil", which drags the morality into pitch black vs. vantablack. On one side, we have the first Icon of Sin, who was driven by blood-lust and vengeance, and on the other side was a demon warlord who only sought perverted hedonism in making the universe his plaything. The morality was a complete black hole right there.
  • Black Comedy: The author admits that this is why he decided to make Eleanor's last name the German word for crash, since she crash lands in Hell.
  • Bloodier and Gorier: If all the tropes on this page discussing the gorn don't tip you off, read the opening and you'll see what a brutal, bloody blood bath you're in for.
  • Bloodless Carnage: Played straight with the Grimm. A.VER.TED for everything and everyone else that crosses either the Doom Slayer or the demons, to the point a lot of characters walk away covered head to toe in blood.
  • Body Horror:
    • It doesn't reach Junji Ito levels of disturbing, but let's just say that Demonic Possession doesn't do a body any favors. Most Possessed are malformed and disturbing to look at. In Fox's case, his own intestines turned into Combat Tentacles that he used to try and strangle Coco to death.
    • Discussed by Yang regarding whether or not holding onto the Slayer's armor during tethering would cause this trope.
      Yang: And what's stopping us from, I dunno, fusing to the suit once we reach the other side or some kind of other bodily horror crap happening to us?
  • Break the Cutie: Pick any member of Team RWBY and watch them go through Hell both figuratively and literally.
    • Poor Ruby. Being forced to fight against the Slaves of Doom does not do an idealistic 15 year old's mind any favors. It's gotten to the point where she's started having horrific nightmares about her mother and is suffering a large amount of Sanity Slippage.
    • Blake is forced by the Slayer to confront her past in the White Fang much earlier than in canon, something she is woefully unprepared for. After they get trapped in Hell, she shows shades of becoming a Death Seeker.
    • Yang has to suffer with the fact that the Possessed she kills were once humans and she ends up having to kill a fellow huntress-in-training when she betrays them for the demons.
    • Weiss being mind raped by the Pain Elemental brings her many family issues to the forefront.
  • Breather Episode: The "Inferno Road" arc is just one massive horrific bloodbath after the next, with team RWBY left far more scarred than previously and Ruby herself turning into a psychological mess. The first chapter of "Kingdom of Tyrants" is a lot more lighterhearted and is mostly comprised of the Slayer and co. humiliating some particularly smug members of Atlas for comedy.
  • Bring My Brown Pants: One of the Imps in Chapter 9 "voided its bowels in horror" at the sight of the Slayer and Ruby.
  • Brutal Honesty:
    • The Slayer is incredibly rude, having no issue with how his words affect people's feelings, which really shows in his interactions with Team RWBY and Ozpin's associates.
    • VEGA, despite his pleasant personality, doesn't mince words when it comes to telling everyone how much of a threat the demons are. He even tells the teams that in a full-scale demonic invasion, the chances of all of them getting killed would be 90%.
    • Ozpin's introduction speech to the new students at Beacon actually subverts the brutal honesty it displayed in canon. Since the students that survived were able to fend off the demons, an unseen enemy that caught everyone off guard, Ozpin included, he's more polite with his words since everyone has already proven themselves.
  • Bullying a Dragon: Almost everyone is aware of how dangerous the Slayer is, so it can be pretty baffling that some people still go out of their way to antagonize him. In which case they are either stupid, insane, bloodthirsty or a combination of all three.
    • Team CRDL naturally paid the price for this. And Cardin still plans on getting back at him one day.
    • Qrow ends up doing this. On the one hand, he was heavily doped up on pain medication at the time. On the other, he's proven to be a Functional Addict. Even after the Slayer effortlessly disarms him and almost crushes his wrist, he's still pretty insistent on fighting the guy, if only to stop him from telling Ruby something that Ozpin doesn't want her to know.
    • Cinder and her crew do this to borderline suicidal levels. The Slayer casually tears them down a peg, with Roman and Neo being the only ones smart enough to get the Hell out of there. They all would have been killed had Salem not intervened.
  • Bystander Syndrome:
    • Averted and Discussed. Unlike everybody else, the Slayer doesn't sit back and let Velvet get picked on by Cardin and reacts accordingly. Afterwards he says he doesn't like bullies, or people who let them do it, calling out both Teams RWBY and JNPR and driving them, including Glynda, to feeling collective guilt.
    • Discussed by Ilia when she gets angry at Blake for defending the humans and the Slayer for killing members of the White Fang. When Blake points out that unlike the White Fang, the Slayer doesn't kill innocent people, Ilia fires back that as far as she sees, humanity's apathy towards the Faunus' plight makes all of them as guilty as those who actively oppress them.
  • Child Soldiers: Many of the Beacon students end up suffering from this as a result of the trauma of fighting the demons. Nora is frequently on the verge of suffering from breakdowns and needs Ren to calm her down, Jaune starts cracking from the pressure of the responsibilities given to him, all the members of Team RWBY have suffered from Break the Cutie moments either from horrific nightmares brought about by the trauma or being forced to kill fellow Beacon students that betrayed them, been possessed, or both, and all of them are still teenagers. Ruby gets it the worst, as at fifteen, she's been subjected to so much violence and bloodshed in such a short time that it's causing her a great deal of Sanity Slippage.
  • Combination Attack: The Slayer and Yang unleash dual megaton punches to finish off Merlot's cybernetic mantis form.
  • Complaining About Rescues They Don't Like: Weiss really didn't like being treated like a Damsel in Distress when the Slayer had to rescue her from a possessed Huntsman during the invasion of Vale.
  • Content Warning: Before the beginning of the story, it warns the readers of a lot of mature content, such as sexual references, nudity, vulgarity, graphic violence, intense scenes, as well as heavy metal references and badasses being badasses.
  • Contrived Coincidence: Before the Slayer can tell Ruby a few things in regards to their Silver-Eyes, Qrow interrupts and challenges him under the pretense that he was being a danger to his nieces by hanging around Beacon. Considering the subject that the Slayer was about to discuss with Ruby and the fact that Qrow is Ozpin's most devoted associate, he muses that Ozpin is deliberately trying to keep Ruby from learning about her heritage until he wants her to know about it.
  • Cosmic Horror Story: Starts to veer into this after the Slaves of Doom make their presence known. Cults try to summon them to bring about the end of the world, characters are driven to madness, and the Greater-Scope Villain of the story is a borderline Eldritch Abomination. While it is more Lovecraft Lite in that the heroes can still fight and kill the demons they face, they are a lot more helpless against the gods and their machinations that indirectly propel the conflict forward. In spite of the Doom Slayer being a borderline Physical God who can fight against these threats, he's damn near as bad as they are and most can't do anything to stop him either way. Qrow pretty much lampshades this by the end of the "Kingdom of Tyrants" arc.
    Qrow: This is the universe we live in. All of us - humans, Faunus, miscellaneous sentient and non-sentient beings - we're ants underneath the feet of gods, monsters, demons and every other overpowered ageless avatar of destruction. All of em', every shade of murder-happy psychopath driven insane by eons, upon eons, of killing one another and we're the ones getting stepped on the most. And we can't do a single thing about it. An' every time we try, they'll just tread on us and keep right on truckin'.
  • Crapsack World: Take DOOM, mix it with RWBY, and suddenly Remnant in canon looks like a pleasant vacation home by comparison now that it has demons, cults, and other horrors to deal with.
  • Crazy Sane: The Doom Slayer is an aggressive, bloodthirsty, Ax-Crazy Unscrupulous Hero who just wants to kill the entirety of demonkind. Of course, when most of his life has been spent fighting and slaughtering beasts whose sole intent is to destroy everyone and everything but themselves, him being as messed up as he is contributes to his effectiveness against them. It even gets lampshaded by Eleanor in Chapter 22.
    Eleanor: You're ruthless. I thought the codex entry on you being around since before the beginning of time was an exaggeration. Now I realize, it's not. Only the most ruthless, most inhumane, could survive for as long as you have.
  • Cult: They've been making appearances in Remnant and are summoning the Demons to the planet. As recent events show, they've been around and have been planning this for a long time.
  • Curb-Stomp Battle:
    • Most of the Slayer's fights are pretty one-sided. You almost feel sorry for most of his opponents.
      • Calling the Slayer's first encounter with the White Fang and Adam this is being almost too generous toward them. He less fought them, more slaughtered them.
      • Team CRDL's 'fight' against the Slayer. To add salt to the wounds, he wasn't even wearing his Praetor suit.
      • Frequently wrecked Teams RWBY and JNPR while training. Yang called him out on holding back against them, with Weiss asking if she's borderline suicidal in wanting him to go all out.
      • In one of said sparring matches, JNPR lasted only a minute and forty seven seconds. This is considered a massive improvement, as the last time they sparred, they only lasted twenty seconds.
      • In Chapter 38, the Slayer encounters Raven and her tribe in the middle of a village raid. He slaughters all of them and nearly does the same for Raven. The only reason he doesn't kill her is that she's still Yang's mom.
    • Team GRVE fought both Weiss and Ruby. Said first years were completely outclassed by the third year team.
    • In Hell, Team RWBY gets utterly thrashed by the Marauder.
    • Watt's gets completely stomped by Marv Talg, with all of his attacks being laughed off and just arousing his enemy as the Incubus beats him down and takes his gun.
  • Cyborg: It's noted by VEGA that, presumably to always have the advantage over their enemies, the demons merge themselves with the technology of the worlds and dimensions they conquer. In addition, Dr. Merlot is also a cyborg, bearing a mechanical arm, eye, and wheels in place of his legs. This is shown further in Chapter 32, where many Hell Knights have upgraded themselves with Atlesian technology.
  • Cynic–Idealist Duo: The Slayer and Ruby respectively. The Doom Slayer is a grouchy, unscrupulous Anti-Hero driven solely by his unending rage and need for vengeance against the Slaves of Doom, while Ruby is a kindhearted, noble idealist who wants to help others simply because it's the right thing to do. As the story progresses, Character Development causes them to flip around to varying degrees. The Slayer becomes more noble and finds something to fight for beyond his need for vengeance while Ruby finds her idealism eroded by the horrors of fighting Hell and becomes more vengeful and crude.
  • Darker and Edgier: It's Doom mixed in with RWBY. Were you expecting a pleasant experience? If you were, turn around to avoid the gory mutilation, cult sacrifices, traumatizing nightmares, and crushing of childish innocence.
  • A Day in the Limelight: Adam gets his own one-shot story titled Taurus, which focuses on his trauma and dwindling sanity from his previous encounter with the Slayer.
  • Dead Guy on Display: The demons and their cultists have a tendency to impale and leave their victims on display. They even do this with the Grimm, as seen in the Marysville Cathedral.
  • Deal with the Devil: Part of how Hell portals are opening on Remnant is due to cultists making these. As VEGA points out and as Olivia Pierce's past dealings show, Hell will betray their collaborators without a second thought once their use wears out.
    Doom Slayer: Hell will offer you anythin' to get its way, anythin' you've ever wanted. An' you'll want to accept it.
  • Death by Adaptation:
    • Junior's men (the ones that assisted Roman's robbery) are a case of What Happened to the Mouse? in canon since they were never heard from again and their fates are unconfirmed. Here, the Slayer brutally kills them when they attempt the same robbery.
    • Fox Alistair gets gruesomely killed by Deag Grav while he's still alive in canon, as seen in the novels After the Fall and Before the Dawn.
    • The White Fang Lieutenant's (Marlowe) fate in canon is unknown. Here, he is decapitated by the Slayer.
    • Professor Peach's fate after the Fall of Beacon in canon is left unknown. Here, she gets killed by Amber by getting bisected via Razor Wind.
    • Merlot's fate post RWBY: Grimm Eclipse is uncertain. Here he is killed by William, Qrow, and Yang.
  • Deconstruction Crossover: Many aspects of both series are given a deep look over and torn apart, showing how bad things would be for Remnant if the demons invaded, how few allies the Slayer's personality would net him, and how traumatic these circumstances would be for the likes of Teams RWBY and JNPR.
    • The Grimm's nature as The Soulless gets this. Humans have souls, so they can at least fight off possession from demons for some time. Even the natives of Remnant, who have Aura and as such are more vulnerable to demonic energy, can resist possession provided that they have a strong enough willpower. The Grimm lack this, making them pretty much free real estate for any demon that wanders near them.
    • The Battle Aura that normally protects Huntsman and Huntresses is a poor match against Argent energy and demons. As the Slayer points out, the body normally protects the soul, but since the soul is now manifested outside the body serving as a shield, it makes them all the more vulnerable.
    • The Grimm's No Body Left Behind aspect gets put into perspective when compared to killing demons. Where as the Grimm fade away after death, demons make a large mess of the place, and a lot of them were once human. Killing them is far more disturbing than killing Grimm, and the girls of RWBY react appropriately. This is even shown in Atlas, where thanks to the demons remaining, they're now working double time thanks to the combination of medical aid and corpse disposal.
  • Demon Slaying: Practically a given considering the Doom Slayer is the main character. Of course, Team RWBY starts following in his footsteps and all of them become badass demon killers in their own right.
  • Dies Differently in Adaptation: In canon, Vine Zenki dies in Volume 8 in a Heroic Sacrifice. Here, his death is far more graphic and unceremonious, having his head punched to a pulp by a Baron of Hell.
  • Dropped a Bridge on Him: In Chapter 34, this happens to Vine Zenki, though it's less of a bridge being dropped and more of a Baron of Hell's fist through his unprotected skull.
  • Dysfunction Junction: Hell's invasion has left nearly everyone with their share of physical, mental, and emotional scars. Ruby and the Slayer have the most issues as a result of the constant battles with demons.

    E - L 
  • Eating the Eye Candy: Yang, being who she is, really enjoys the sight of the Slayer without his chest armor.
  • Eldritch Abomination: While many demons are horrific to look at, most of them don't go too far beyond either Animalistic Abomination or Humanoid Abomination territory. The Shadowlord that the first Icon of Sin fought in Hell's beginnings, however, falls squarely into this trope. It was described as an amorphous mass of tentacles and reptilian maws, and some of its tendrils were disturbingly phallic in visage.
  • Enemy Mine: The Slayer may hate the White Fang and they, in turn, despise him, but Sienna is willing to make a temporary truce with him if it means taking down the SDC.
  • Equal-Opportunity Evil: There are numerous cults out there that detest racism and treat the Faunus as equals.
  • Establishing Series Moment: Want to know what you're in for? Look at the opening of the first chapter and watch the Slayer brutally mutilate and kill the White Fang. He outright punched the jaw clean off of one of them! Yup, you're in for one hell of a bloodbath.
  • Even Evil Has Loved Ones:
    • Emerald cares for Cinder and begged the Slayer not to kill her in Chapter 19.
    • Demons are shown to be able to develop genuine care for one another in some capacity. The Broken-Horned Baron grieved its sibling and was further enraged toward the Slayer for killing it.
    • One of the SDC officers the Slayer killed called out to her children as she was bleeding out, showing that she has a family she cares for.
  • Even Evil Has Standards:
    • Marcus is a psychotic demon cultist, but he has a distaste for racism and treats the Faunus he works with equally.
    • The demon warlord that the first Icon of Sin fought and killed to consolidate his power was so horrifically despicable that even he was disgusted by him. It is extremely telling that said warlord was so monstrous that even a Satanic Archetype of the highest order found him repulsive.
    • Downplayed in that they're only jackasses and not outright evil, but even team CRDL is highly unnerved by team GRVE, and rightly so.
  • Eviler than Thou: Qrow remarks that the demons are even worse than anything Salem could cook up. Whereas he called Salem's monsters "fear" in canon, he describes the creatures of Hell as "pure evil".
  • Evil, Inc.: The SDC, or at minimum its scientists, are practically the Remnant equivalent of the UAC or the Umbrella Corporation. They stick their nose in inter-dimensional technology that can end the planet, capture and experiment on innocent Faunus either as livestock or as targets to test the Slayer's weaponry, and they kidnap and interrogate anyone who gets too close to their endeavors - such as Team SSSN - be they innocent or not. They're even willing to capture unsuspecting civilians, such as Marrow, for the sake of their experiments.
  • Evil Versus Evil:
    • The demons, Grimm, and the White Fang are all enemies of humanity, but they also really hate each other and are actively fighting and killing one another.
    • The White Fang are a Well-Intentioned Extremist group who went down the He Who Fights Monsters path and their main opposition is an Evil, Inc. whose crimes include capture of civilians (human and Faunus), as well as mutilation and experimentation of them.
  • Face Death with Dignity: In chapter 32, the defenders outside of the Epsilon facility not part of Atlas have made peace with the fact that the facility needs to be destroyed, even though they'd all probably die when it does. The short exchange between these unlikely allies sums it up nicely.
    Sun: We're buying the Slayer time for him to blow this whole joint to kingdom come?!
    Blake: Yeah!
    Sun: And there's no guarantee we'll be able to evacuate under all these Grimm?
    Sienna: None whatsoever!
    Sun: ... Yeah, I'm cool with that.
  • Fan Disservice:
    • A naked Summer Rose would be attractive...buuut at the time she had empty eye-sockets with blood pouring out, a torn open womb, and was trying to drown her daughter in blood and rot. Thank God it was just a dream.
    • Whenever the Slayer is either naked or shirtless, the sheer amount of scars and closed wounds emphasizes how much utter hell his body has been through, detracting from the attractiveness.
  • Fantastic Racism:
    • Racism against Faunus is still very much present. Vice versa with the White Fang against humans.
    • The Slayer and his father apparently went through this on Argent D'Nur due to having Earth (or Terran) ancestry. He also gets this from some people on Remnant due to being from another planet. Others don't even acknowledge him as a living thing and just see him as a monster.
    • The demons hate humans, but they especially hate Silver-Eyed warriors, referring to them as "heathens" and actively going out of their way to target them if encountered.
  • Fire-Forged Friendship: The Slayer starts to acknowledge Ruby and her friends as comrades after fighting a series of battles against Grimm and demons alongside them.
  • Foil:
    • The Slayer and Ruby. Both are Silver-Eyed warriors and major weapons enthusiasts who aren't exactly people persons, but they oppose each other in many different aspects. Ruby is a Fragile Speedster while the Slayer is a Lightning Bruiser. Ruby's difficulties with people stem from her being socially awkward while the Slayer's stem from a desire to be alone from others. Ruby is an idealist where the Slayer is a cynic. Ruby's love for weapons is rooted in admiration of them while the Slayer just loves any destructive weapon that he can use to kill things with (and Weiss notes that he treats the weapons in his arsenal with more care than he treats actual people).
    • The Slayer and Ozpin are both long-lived beings who have been fighting wars against their arch-foes for millennia. The Slayer prefers to go out and physically destroy his enemies with his bare hands, whereas Ozpin is more behind-the-scenes in how he eliminates potential threats. While the Doom Marine is a Leeroy Jenkins who rushes in, kills whatever gets in his way, and plans things as he goes along, Ozpin prefers meticulous, long-term plans for how to deal with his enemies. Ozpin also has a strong emphasis on working together in contrast to the Slayer, who prefers to work alone. And despite both being ancient to the point of both being time abysses, the Slayer is downright un-aging while Opzin's immortality stems from reincarnation.
  • Freak Out: The amount of times that characters have had this in response to either the Slayer's psychotic blood-lust or the demon's horrific and bloody actions is just too much to count.
  • The Friend Nobody Likes: Aside from Ruby and Yang, everyone else has a hard time liking the Slayer. His aggressive attitude doesn't help things in the slightest.
  • From Bad to Worse: After the Slayer wakes up and cults start summoning demons, things go seriously downhill for almost all of Remnant. Grimm start becoming far more erratic and aggressive thanks to feeding off the Doom Slayer's and the demons' hatred for each other and the assault of Vale happens far earlier than it did in canon, with Cinder's manipulations being completely unneeded to make it happen.
  • Full-Frontal Assault: The Doom Slayer's first actions upon reawakening was to slaughter some members of the White Fang while completely naked.
  • Fusion Fic: It gives the appearance of a crossover between Doom and RWBY at first, but as it goes on, it reveals itself to be this, as Hell, the Slayer, and Argent D'Nur have more ties to Remnant than most realize. It also blends in Wolfenstein into the backstory since the Slayer's paternal ancestor was B.J. Blazkowicz himself, so the events of those games happened in the background. In addition, Remnant is one of the few realms left that Hell has yet to swallow up alongside the Earth of the current age, and all of demon-kind originates from the original genocide of the pre-history Remnant's humanity caused by the Brother of Darkness.
  • Genre Mashup: The story starts out very much like a standard action-adventure crossover, but it later becomes more of a horror-adventure Fusion Fic with deconstruction and Black Comedy elements alongside added Cosmic Horror with the origins of Hell.
  • Get A Hold Of Yourself Man:
    • Downplayed. When Ruby was having a Heroic BSoD after they get trapped in Hell, the Slayer lightly taps her on the back of the head to snap her out of it, though it still hurt as much as an actual punch to the back of the head would.
    • Inverted and defied. Taiyang was absolutely pissed at the Slayer for dragging his daughters into Hell (figuratively and literally) and tries to punch him in the face to calm down, only for the Slayer to catch his punch and respond in kind with his own. Qrow even finds it bemusing that the Slayer didn't let Tai punch him.
  • A Girl and Her X: Deconstructed with Ruby and the Slayer (who is half-human, half-Argenta). They do form a close bond with each other, but that bond is mostly positive for the Slayer as he regains some of his old humanity. For Ruby, their bond does her more harm than good. Constantly trying to be by his side leads to her taking part in his blood-soaked, maddening life, and all the psychological issues that come with it heavily affect her. She's also noted by Dr. Catrice to be way too attached to the Slayer for her own good. Even Ruby herself realizes the harm it's caused her and starts distancing herself from the Slayer for the sake of her mental health.
  • The Glomp: Once Team RWBY finally escapes from Hell, Ruby throws herself at Yang and then at the Slayer, happy that they all survived.
  • Good Is Not Soft: The Slayer is one of the heroes and works to destroy the Grimm and demons, but he is NOT a Nice Guy and his methods are so visceral and graphic that most of his allies are either weary of him or see him as just as much of a threat as Hell itself.
  • Gone Horribly Wrong: Ozpin planned for the Slayer to become close to Ruby and her friends so that he could become someone that he could better manage and control via the positive influence their idealism would have on him. Instead, the complete opposite happens. The Slayer is no more manageable than how he started and Ruby's well on her way to becoming his Distaff Counterpart.
  • Gorn: It's DOOM! This story absolutely revels in the copious blood and gore the series is known for.
  • Gratuitous Latin: The Lingua Argenta, the official language of Argent D'Nur. Though it's not the only one as English, or what sounds like English, is also commonly spoken by the Argenta.
  • Great Offscreen War: There are a number of battles that happened in the background history of the world. The war between Argent D'Nur and the Slaves of Doom as well as the Slayer's one man crusade against them following his home-world's destruction are among them. There's also the battles the Slayer's ancestors, the Blazkowicz family, fought against the Nazis.
  • Happy Ending Override: After the events of the classic games, the original Doomguy ends up on Argent D'Nur after an unspecified amount of time still fighting the demons. However, he manages to gain favor with the Night Sentinels, falls in love and marries a Argenta woman, raises a family with her and seemed happy in spite of not being able to return to Earth. It all falls apart when Argent D'Nur is conquered by Hell and his eldest son William becomes the Doom Slayer, leaving his own fate currently unknown.
  • Hell on Earth: This will be the ultimate fate of Remnant if the Slaves of Doom succeed. Just like Argent D'Nur and many worlds before it.
  • Holy Burns Evil: The Relic of Destruction releases a holy light that disintegrates demons on contact. Ruby's silver eyes also emit blasts of holy light that disintegrate demons and sear through their flesh.
  • Horrifying the Horror:
    • The Creatures of Grimm are very hesitant to fight the Slayer, showing that even animalistic abominations that are driven by fear are terrified of him. Winter didn't even believe this to be possible.
    • Much like in the games, the Doom Slayer terrifies the piss out of all of demon-kind. After awakening her Silver-Eyes, they start being wary of Ruby as well.
    • Salem is Ozpin's immortal arch-enemy and controls the animalistic abominations that roam the world. One look into the Slayer's mind, and she was terrified beyond words.
  • Human Sacrifice: The cultists who worship Hell frequently practice this. They don't really care what their victims have done or who they were so long as they have sacrifices.
  • Hypocrisy Nod: The Slayer really hates the fact that Ozpin deliberately keeps important secrets from his students and peers. When the Slayer decides not to inform Ruby about everything regarding the Silver-eyes all at once, he muses that he really isn't that different from Ozpin in that regard.
  • Hypocrite: During their fight in Chapter 2, Adam Taurus calls the Slayer a murderer. Adam Taurus, homicidal maniac who gleefully kills humans left and right out of his desire for revenge for the abuses of the Faunus race (in actuality, just to satisfy his own personal bloodlust), calls the Slayer a murderer.
  • Idiot Ball: Remnant's Council seems to be clinging onto this thing for dear life. They refuse to send reinforcements to the Academies still under siege from demons, demand that occult artifacts be brought straight to them when getting rid of them entirely will do a better job at mitigating Hell portals, and on top of that, still plan on having the Vytal Festival when cancelling the event and pouring their focus into their demon invasion problem would be far more productive, and they're later pretty much forced to cancel it. It's telling that Ozpin and the Slayer often get better results by ignoring them.
  • I'm Standing Right Here: When Qrow contacts Ironwood and the General orders him to stop the Slayer from destroying Epsilon, Qrow very bluntly points out that the Doom Slayer is standing right next to him and can hear everything they're saying.
  • In a Single Bound: One of the only ways the Aura users of Remnant can outdo the Doom Slayer physically is that they can jump a lot higher than him. At one point, the party has to get to a balcony. Everybody else gets there with one jump, while the Doom Slayer has to do a bit of parkour to get up there. The Doom Slayer gets a bit miffed about this and tells himself he'll have to find a way to rectify this.
  • Innocence Lost: And stomped on, disemboweled, desecrated, and burned to ash for good measure. Team RWBY does not have a fun time here. They all had to witness an unprecedented amount of death and misery in a short timeframe, and they either start going insane or become desensitized to all the carnage surrounding them. Poor Ruby gets it the worst.
  • Insane Equals Violent: The Slayer isn't insane (well, not completely insane), but he's so violent in his actions that he comes across as this to almost everyone he meets.
  • In Spite of a Nail: Despite the different circumstances in which the characters meet as well as the demon invasion of Beacon pretty much cancelling its initiation, the teams all end up the exact same way as they did in canon. The Slayer notes that the teams turned out the way they did due to Ozpin rigging them that way.
  • Interrogated for Nothing: The SDC kidnaps and tortures Team SSSN for information about the Doom Slayer, even though they had never met him and don't know anything about him.
  • I Owe You My Life: While Weiss still didn't like the Slayer at the time, she was still grateful to him for saving her during the demon assault on Vale and tried to prevent her sister from taking him back into Atlas custody. She mainly starts having second thoughts on him when he kills one of Torchwick's mooks. Ironically, Winter defends his actions (sort of) by pointing out that in their line of work, such actions are a necessity.
  • "It" Is Dehumanizing:
    • Ironwood insistently refers to VEGA as "it", never "he". VEGA doesn't seem to mind though. Later, Glynda starts doing the same after VEGA abandons Beacon to return to the Slayer.
    • The Slayer's grandfather only ever calls him and his father "Terran" due to said father being from Earth.
  • It Is Not Your Time: Ruby passes out from her injuries and exhaustion. She dreams of the afterlife and says she quits and wants to be with her mother. Aelia, mother of the Doom Slayer, appears and says she cannot see her yet because she is not dead, then Ruby wakes up.
  • It's All About Me: Olivia Pierce only cared for achieving Godhood and her followers were little more than stepping-stones to get that power. In her farewell to them, she outright told them this in what is perhaps the most backhanded "thank you" ever.
  • It's All My Fault: Thanks to his status as The Jinx because of his Semblance, Qrow blames himself for Ruby & Yang getting trapped in Hell, much like how he blames himself for Summer's death.
  • Jerkass Has a Point: The Slayer may be crude, but he is right in telling Ruby and Yang to get over killing the Possessed. The Battle against Hell, as well as war in general, is no place for those who balk at the sight of blood. When he was training Teams RWBY and JNPR and told Yang to do her hair up and she objects, he pulls her hair to prove a point. Long hair is very easy to grab and exploit as a weakness in a fight.
  • Kick the Morality Pet: While Ruby is one of the few people the Slayer is nice to, he can be downright mean to her every now and then. The most frequent example being how he lambastes her aspirations of being a Huntress and tells her to give up. Granted, he's doing so to prevent her from living a life of death and misery (or turn out like him), but it's still pretty cruel.
  • Knee Capping: The Slayer shoots Adam in the knee with his energy pistol. Hell, the chapter where this happens is literally named Kneecapped With A High-Powered Energy Pistol.
  • Kryptonite Factor: Demonic energy and Aura do not mix at all. When Ruby first came into contact with it at the Cathedral of Marysville, she immediately started feeling boundless agony. Blake's thought process describes it as if someone managed to burn her very soul. The Slayer points out that a part of the reason is due to Aura being a defense shield for people on Remnant. A soul needs to be protected by the body, not the other way around. People from Remnant can use certain Argent power-ups like the Berserk sphere or Quad-damage, but they have negative side effects on them, such as Jaune now hearing the voices of the demons after he uses the Berserk sphere and Blake nearly having a Heroic RRoD after using the Quad-damage sphere.
  • The Legions of Hell: Following their failed invasion of Mars, the Slaves of Doom now have their sights on Remnant. And it's up to the Slayer and Team RWBY to stop them.
  • Let's You and Him Fight: To settle their differences, Ruby proposes a duel with Weiss, which she accepts. It gets interrupted before it begins by Team GRVE, unfortunately.
  • Like Brother and Sister: As the story continues, the Slayer and Ruby develop a very close relationship and treat each other akin to siblings. The fact that Ruby frequently reminds the Slayer of his deceased younger brother, Hunter, just adds to it.
  • Locked Out of the Loop: Ozpin keeps his allies out of the loop in regards to his past as well as other knowledge that he doesn't want them to know about. He doesn't tell the Slayer anything in regards to the Relics due to certainty that he would destroy them to keep their power out of the hands of Hell and Salem. Given that both he and VEGA suggest killing the Maidens when he learns that Salem desires their power, it's not completely unfounded. Ozpin also tries to keep Ruby from learning anything about her Silver-Eyes, and has Qrow prevent the Slayer from telling her anything. This aspect frustrates the Slayer a lot.
  • Love Is a Weakness: William's maternal grandfather despised the fact that his parents were raising him in a way that he was nurtured and loved, as he found those concepts to be weaknesses that Night Sentinels should never have.

    M - Q 
  • Man of Kryptonite: The demons are this to both Grimm and Huntsmen. Since the Grimm are The Soulless, demons can possess them with ease (beings with souls, even Huntsmen, can resist possession as long as they have enough Heroic Willpower). Huntsmen have Aura, their souls acting as a shield against physical damage. Unfortunately, demons use Argent energy, which is not only destructive, but attacks the soul, so people with Aura are really vulnerable to it.
  • Manipulative Bastard: The Slayer thinks of Ozpin as one after he intentionally rigged the teams so that they would end up in a specific way. He's really not far off, as it turns out Ozpin was counting on Team RWBY (Ruby in particular) to positively influence him into someone he could better manage.
  • Mentor Archetype: The Slayer helps teach Teams RWBY and JNPR how to effectively fight so they don't die in a demonic assault.
  • Mistaken for Racist: The Slayer doesn't have anything against Faunus - or beastkin as he calls them - just the ones who try to kill him. He tends to get mistaken by White Fang members (and Blake at first) for a racist because of what he refers to them as and some of his insults toward Adam motivated him to kill his opponent more than he normally would be.
  • Mook Horror Show: If you are 1.) a White Fang member, 2.) a Schnee security officer, or 3.) a demon or Possessed, then you will be disemboweled in such gruesome ways that you will question your life choices.
  • Morality Pet: While the Slayer is in-no-way evil, he's very confrontational and hard to approach. Ruby and Yang are among the few people that can actually get him to be something resembling polite. VEGA even calls them the Slayer's "stabilizing influences".
  • Mythology Gag:
    • Marcus Black's title as the "Heresiarch" was originally a boss in Hexen.
    • The Unmaker that Marcus Black uses comes from Doom 64.
    • Yang punching clean through Eva Pioux's chest and shouting "Dynamite!" was originally done by the Doom Marine in the Doom comics to an enemy demon.
    • Cardin named his mace "The Great Communicator", which was the nickname for Doomguy's chainsaw. Ironically, the Slayer finds this name to be incredibly dumb.
    • In Chapter 12, the Slayer gives the tip "shoot em' till' they die", which is a spin on the fake GamePro magazine protip "To defeat the Cyberdemon, shoot at it until it dies."
    • Also from the Doom Comic: In Chapter 13, Yang expected William to openly declare "Guns are for wusses."
    • Also, Yang says "You are huge! That means you have huge guts" in Chapter 23.
    • The Slayer's childhood friend back on Argent D'Nur was a rabbit Faunus named Perenna, a nod to how one of Doomguy's motivations for slaughtering Hell was to avenge his pet rabbit, Daisy.
    • As revealed in chapter 25, Dr. Merlot's body is part machine with wheels in place of his legs. It's a reference to Pinky from Doom, with the commentary about "one half of him landed here, and his ass went in another direction" being based in commentary from the film.
    • The Doom Slayer's Argenta name is revealed to be Markacc, which is actually an anagram for Carmack, referring to John Carmack, one of the founders of id Software and one of Doom's creators.
    • When the Slayer prepares to destroy the Epsilon facility, VEGA says, "The consequences of your actions here are irreversible." This is the same thing VEGA said in The Ancient Gods, Part 1 when the Slayer decided to revive the Dark Lord.
    • Cinder's hate for the Slayer after he nearly killed her in Chapter 19 reflects her canon counterpart's hate for Ruby after she bested and crippled her in the Volume 3 finale.
    • Hunter's Argenta name, Lahl, is an anagram for the last name of Tom Hall, a former game designer for id Software.
    • Ruby getting shut down by Davoth after she tries to stand up to him in Chapter 35 could be a reference to "Gravity" in Volume 7. After Salem makes herself known to our heroes, Ruby tries to stand up to her, but she breaks down when Salem brings up her mom, which is what the Dark Lord did.
  • Naked on Revival: Since the Atlesian scientists took his armor to study, the Doom Slayer first awakens in the buff.
  • Names To Run Away From Very Fast: Team GRVE (Grave) can't mean anything good. Turns out, they are not.
  • Never Be a Hero: The Slayer very bluntly tells Ruby to give up on her dreams of becoming a Huntsman and tells her to just go home. However, he's not doing it out of malice, but so that she doesn't turn out like him. Unfortunately, she doesn't listen and starts to become exactly like him, much to his regret.
  • Never Hurt an Innocent: The Slayer never hurts innocent people and will brutally slaughter anyone who does. He would rather let himself be captured by Atlas rather than risk killing their soldiers that have nothing to do with his revenge. He was also horrified when he believed he hurt a young girl in his fight with Neo (it was actually one of Emerald's illusions). However, if said "innocents" just so happen to be working for people involved in horrific experiments on humans and Faunus, then he has no mercy towards even the rent-a-cops. This gets further played with when the Slayer intends to destroy Epsilon, an act that he knows will cause consequences for all of Remnant, which could include mass deaths on account of the increased Grimm rampancy it will bring. While the Slayer will never directly harm an innocent, he has fewer qualms about casualties as an indirect consequence of his actions.
  • Nightmare Sequence: Fighting Hell starts to take its toll on Team RWBY, and each of them start having horrific nightmares.
    • Ruby has a disturbing one involving a mutilated, deformed version of her mother trying to drown her in a pit of blood and gore; condemning her for following in the Huntress' lifestyle.
    • Weiss dreams that she loses her fight against the Gigas first seen in the White trailer, her father Jacques sells Atlas out to Hell and she's dragged away by two Imps wearing SDC vests.
    • Blake has nightmares of the Slayer killing off all of the White Fang, including her father and Ilia.
    • Cinder of all people has one, remembering her parents summoning Demons that proceeded to kill them and all the other cultists, with her being the only survivor of the attack due to Salem being the one who saved her.
    • Yang has one where she's a child and an Imp's arm thrusts out of the pancake batter Summer was making and kills her. This is rather tame compared to the above nightmares.
  • No-Nonsense Nemesis:
    • The Slaves of Doom are remarkably intelligent and don't take their opponents lightly. When they begin their invasion of Remnant, they attack all the Huntsman academies at once, with Shade Academy still fighting against them. Ozpin wonders if they were trying to destroy Remnant's main lines of defense, or if they were simply testing them.
    • The demons treat Silver-Eyed Warriors, such as William and Ruby, with far more caution and ferocity than they would anyone else. Upon seeing Ruby's Silver Eyes, the first thing they tried to do was not only rip out her eyes, but also tear out her womb so she couldn't procreate any more of their enemies.
  • Normal Fish in a Tiny Pond: This trope comes into play for Jaune's performance against the Possessed during battles against demons such as the assault on Vale. Jaune may be a complete novice who's never fought before, but as he puts it, the Possessed are just shambling zombies, so even someone who's never swung a sword before can take them out without too much trouble as long as they stay out of reach.
  • "Not So Different" Remark: Salem tries to convince the Slayer that they are more similar than he believes. He disagrees.
  • Not Distracted by the Sexy: While the Slayer acknowledges that Yang is attractive, he's completely unperturbed by her flirtatious nature. This actually surprises Yang.
  • Not So Invincible After All: For all the Slayer's strength, he isn't invincible and can be defeated or subdued either by those strong enough or by pushing himself to the brink of exhaustion, although to his credit it takes a lot to pull off. He's also been bested by means of traps and trickery, as seen when Jacques has Merlot tether him to a prison cell and takes VEGA from him. Jacques even gloats about this when he delivers his speech to the other Atlas society members when he's unveiling the Slipgate.
    Jacques: I heard the rumor of his 'godlike' power to inflict unwarranted destruction where it isn't necessary. But... (unveils the Slayer's helm) all members of the press, let me just say: They were just rumors.
  • Nothing Is the Same Anymore: The demon invasion forever changes Remnant, as survival becomes more difficult and cults worm there way into the infrastructure of the kingdoms.
    • Fox's death changes up the story, as it now operates on Anyone Can Die.
    • And following Marcus's cult attack on the Slayer, Ozpin and his group, as well as the recent demonic attack on Beacon, Ironwood is now colluding with Roman and Neo to better combat Hell, Cinder's plans have been derailed and she and her associates have fled Vale, Adam has been reduced to being the cultists' messenger boy, and Team RWBY and the Slayer are trapped in Hell.
  • Obstructive Bureaucrat: The Vale Council are better at stopping the heroes than they are helping them. The Slayer and Ozpin have none of it.
  • Odd Friendship: Ruby, a hyperactive scythe-wielding weapon fanatic, becomes best friends with the Doom Slayer, a near-silent, rage-filled demon killer.
  • Oh, Crap!: The general reaction to the Slayer and Hell.
    • Jaune panics when the Slayer starts suspecting the truth about how he got into Beacon.
    • Qrow has this reaction when Ozpin responds to his question of if he can take him with silence, since no one on their side can truly stop the Slayer should he begin to oppose them for whatever reason.
    • Ruby and Weiss when they are attacked by Team GRVE.
    • Ozpin has this reaction when Gretchen reveals that she knows about his past as Ozma.
    • ALL of Cinder's associates have this reaction to the Slayer once he starts annihilating them.
    • Ozpin has this when he learns that the demons have stolen the Shade Academy Relic.
  • Oh, My Gods!: The Brother gods are worshiped on Remnant, and many people refer to them in this manner when shit goes sideways.
  • Outside-Context Problem: In Chapter 37, Emerald and Mercury mention that they weren't expecting someone like the Slayer: a brutal killing machine that isn't afraid to end their lives, let alone tear them to shreds; even Emerald is horrified and taken aback by how ruthless he is.
    Emerald: (shivers) He's… he's not supposed to… be so relentless.
    Mercury: (scoffs) What? You thought we'd only be up against the virtuous, goody-two-shoe types that are all about the goodness of people, redemption, and all that crap? (Emerald looks up at him, knowingly. Mercury frowns.) Yeah, me too.
  • Pay Evil unto Evil: The Slayer is by no means evil, but how he kills his enemies is NOT pleasant in the slightest. However, each and every single one of them deserve what's coming to them.
  • Powered by a Forsaken Child: Aura is generated by a person's soul. The demons take full, disturbing advantage of this fact by using them to open portals. They also intend to do this to the Maidens if they ever manage to get their hands on them.
  • Power is Sexy: The Demons are under the assumption that Huntresses are attracted to a man's bloodthirsty strength as a measure of virility, and they fear that any one of the women would willingly "spread their legs" for the Doom Slayer once they see him fight. As such they want to either kill the Slayer or conquer Remnant before the Doom Slayer finally notices the attractive women around him and continues his Silver-Eyed lineage against Hell.
  • The Power of Hate: A recurring theme with the Slayer and the demons is that their near unending hatred is a major source of strength for them, as well as why they're as messed up as they are. The Slayer derives strength from his rage towards the demons and has nearly thrown away his humanity as a result. The demons, meanwhile, are actually the scattered soul fragments of humans when they were wiped out by the God of Darkness in the pre-Remnant genocide, with their undying hatred warping their surroundings in the void to become Hell and twisting their forms to the point where they are no longer what they once were.
  • Properly Paranoid: Ironwood, Qrow, Weiss and Winter don't really trust the Slayer due to his blood-lust, violent nature, and willingness to do anything to destroy the Slaves of Doom. Qrow views him as more of a threat because of the latter reason, as it means that if killing them would lead to Hell's destruction, he's certain the Slayer would do it without question. Ozpin relies on the Slayer since he's the most effective when it comes to fighting Hell, but actively keeps him out of the loop in regards to certain things like the Relics. This is because he's certain that the Slayer will do everything he can to destroy them if it means denying Hell the power they possess. Considering that the Slayer advocated for killing Amber to deny Hell and Salem her power, not to mention later trying and succeeding at destroying Epsilon, an act that would explicitly cripple Remnant as a whole and lead to countless deaths due to Grimm rampancy and insurgency from the populace, they have a point not to be very trusting of him.
  • Pyrrhic Victory:
    • Ozpin tells the Slayer that if he can land one hit on him, he can leave Beacon grounds and do whatever he wants. While Ozpin stalemates the Slayer, he takes several hits, so he lost his bet and has to give the Slayer free reign over where he goes.
    • The first victory for the Night Sentinels during the defense of Argent D'Nur's capital was described as this.
  • Punch Catch: Happens three times in Chapter 29. The first is when the Marauder catches Yang's fist and then knees her in the groin. The second is when the Marauder catches the Slayer's fist and then knocks him down with a headbutt. The third is when a pissed-off Taiyang tries to slug the Slayer in the face, only for the Slayer to catch it and retaliate with his own.
  • The Quisling: Team GRVE has been in league with Hell for a while.

    R - Y 
  • Really 700 Years Old: Ozpin and Salem both are well over a thousand years old. Both are also older than the Slayer (who is possible around 10,000 years old) since they pre-date Hell's existence, and by extension, the demons' existence.
  • Redshirt Army: The SDC security forces are about as useful against Hell as a staple gun against a giant robot.
  • The Reveal: In Chapter 28, Merlot reveals to the Slayer and the entire Epsilon facility that only half of Argent D'Nur was devoured by Hell and the Night Sentinels are still alive.
  • Revenge: A perpetual attribute of multiple characters is that they are highly driven by a need to make others pay for their suffering.
    • The Slayer's primary motivation for fighting the forces of Hell.
    • Team GRVE wants revenge on Ozpin for the secrets and lies he's kept and dooming them to wage war with Salem forever.
    • Coco really wants to drive a bullet into Deag Grav's head for killing Fox.
    • Cinder wants to burn the Doom Slayer alive for nearly killing her during their first encounter.
    • All of demon-kind seeks the demise of the brother gods for slaughtering their human selves eons ago and turning them into what they are now.
    • Ruby's desire to kill Jacques is at least in part motivated by his teleporting of the Slayer away from her.
  • Rewrite: To better match the lore and backstory later revealed in Doom Eternal, certain chapters were given minor revamps and rewrites regarding Argent D'Nur and the Doom Slayer. For example, Aelia and Doomguy originally had a pleasant first meeting in a field. In the revamped version, it was after he was severely wounded and driven mad from his final battle with the Icon of Sin, in which she tried to tend to his wounds. Another is that the Marauder speaks in the rewritten versions when he was silent in the original.
  • Ruder and Cruder: RWBY and DOOM characters alike drop "fucks" and "shits" constantly, even though neither source series were known for profanity above "crap", "damn", and "hell".
  • Sacrificial Lion: Fox's death serves to drive home that no one is safe in this fic.
  • Satellite Character:
    • Cardin's teammates don't really have any personality or significance outside of being his cronies.
    • Gretchen's teammates are cultists like her, but lack any depth beyond being her teammates.
  • Shout-Out:
    • The chapter "The New World III: Corpsegrinder" refers to George "Corpsegrinder" Fisher, who was the lead singer of the band Cannibal Corpse.
    • Both the titles from the chapters "This Pain of Train" and "Is Finally Boarding" are lyrics from the song 'Clandestine Ways' by Cattle Decapitation.
    • The phrase "Raining blood from a lacerated sky" found in "At Doom's Gate II: The Inferno Beacon" comes from the Slayer song, "Raining Blood".
    • In "Inferno Road I: Suffer", Yang unleashes a flurry of punches while shouting "ORAORAORAORAORAORAORA"! Yes, this is a JoJo reference. However, it was later removed due to the author finding it out of place.
    • While in Hell, Ruby stumbles on a headband with a leaf symbol on it.
    • The sexual death ritual in Chapter 27 is explicitly inspired by Event Horizon. However, it was heavily toned down later on to keep it ambiguous.
    • In Chapter 30, when Jacques swears to the gods he had no idea what Merlot was doing, the Slayer says, "Swear to me", which is a reference to Batman Begins.
  • Sick and Wrong: How many characters react to the demons' atrocities, and at the sight of the demons themselves. Yang is particularly disgusted by the sight of a Mancubus. The demons themselves have this attitude to sexually depraved members in their ranks.
  • Silent Snarker: While the Slayer is more chatty this time around, he can still be remarkably sarcastic without opening his mouth, such as when he gave Weiss a flick on the nose.
  • Skewed Priorities: Even when they have hordes of demons and Grimm gunning for them, the Atlesians and the White Fang are still at each other's throats.
  • Sleep Cute: A strictly platonic example. After suffering through her aforementioned Nightmare Sequence, Ruby decides to go sleep in the same room as the Slayer and seeing the way he sleeps sitting on the floor against the wall she joins him and nods off against his shoulder. He doesn't try to stop her, and it goes to show how much she trusts him.
  • Slut-Shaming: Many demons insult Salem in this way, calling her "Whore-Queen of the Grimm" and "Slut-Witch of Black".
  • The Soulless: The Grimm do not have Souls, like in canon. However, this leaves them open to become Possessed by Hell. The Slayer basically describes them as free real estate for the forces of Hell.
  • Spared by the Adaptation: Hazel's younger sister, who died before the start of the series in canon, is alive here and is also a cultist serving the Slaves of Doom.
  • The Stations of the Canon: While certain canonical events for RWBY happen (such as Ruby's fight with Weiss regarding the team's leadership), it mostly averts this, as the fic puts a unique spin on the show with DOOM lore added in, with the breach and Grimm assault of Vale and the battle at the docks having completely different circumstances to them. As of chapter 20, with team RWBY and the Slayer sent to Hell, alongside Cinder and her cohorts being forced to flee Vale after their encounter with the Slayer, Adam getting crippled and stripped of power, and the Vytal Festival being canceled, canon has been completely thrown out the window.
  • Steel Ear Drums: Averted multiple times.
    • While atop an AFV, Ruby's ears are left ringing after being too close to the roof-mounted cannon while it's firing. She is able to adjust though.
    • Both a White Fang mook and Roman have their eardrums burst by close-range shotgun blasts.
    • When the Slayer lets off a shotgun blast in the elevator to shut the music off, Qrow experiences pain from the loud noise and wonders if he'll eventually start going deaf.
  • Story Arc: The story is divided into multiple arcs.
    • Chapters 1 and 2: "Reawakening".
    • Chapter 3-7: "The New World".
    • Chapter 8-12: "At Doom's Gate".
    • Chapter 13-20: "Demon Seed".
    • Chapter 21-24: "Inferno Road".
    • Chapter 25-35: "Kingdom of Tyrants".
    • Chapters 26 and 27: "Loomings".
  • Straw Nihilist: The demons are this, as evident by the one that possessed Professor Peach after she failed to kill Amber.
    Possessed Peach: This pained, mortal flesh despaired when the truth was forced upon her, as will all of you when you realize how much of a sham human existence on this world truly is.
  • Stress Vomit: A number of Huntsmen and Huntresses could really benefit from some barf bags given how often it happens in the story, such as Ruby after the Marysville Cathedral fight, and again after a series of battles when they first arrive in Hell.
  • Summoning Ritual: Cultists use these to open Hell portals that bring the Slaves of Doom to Remnant.
  • Surprisingly Sudden Death: Fox's death happens out of nowhere and catches everyone, his teammates and the Slayer, off guard.
  • Take Our Word for It: We have no idea what the fight between Ozpin and the Slayer was like other than it ended with them both battered, bruised, and bandaged. Doubles as an Offscreen Moment of Awesome since this means that Ozpin is the first person to fight the Slayer to a standstill.
  • Take That!: In Chapter 33, the Slayer blasts a speaker playing Rebel Renegade by Tommee Profit, which got infamy by being chosen for the TV Spot trailer for Doom Eternal despite not matching the game's style.
  • Taking You with Me: One Arachnotron attempted to do this to Jaune, but he's saved just as it explodes.
  • Talking Is a Free Action: Defied. This is pretty idiotic to do, and the Slayer wholeheartedly takes advantage of when his enemies run their mouths to kick their asses. Just ask Cardin and Cinder, since they got headbutted and shotgun-blasted in the face respectively for their troubles. Pyrrha makes it a point to defy this as well when Peach was talking about killing Amber.
  • There Are No Therapists: Not in Hell there ain't! However, Yang and the Slayer's conversation after fighting the Marauder indicates that they plan on getting Ruby to a therapist when they get the opportunity. She makes good on her word, and Chapter 36 sees Ruby going to a therapist to work out her issues.
  • These Hands Have Killed:
    • Ruby has this reaction after the fight in Marysville, knowing that the Possessed that she killed were once humans.
    • Yang also has this reaction when she kills a Possessed. Happens to her again when she kills Eva Pioux of Team GRVE, a fellow Huntress-In-Training.
  • This Is Gonna Suck: This is pretty much anyone's reaction to when they learn that Cordovin is coming. Even VEGA of all characters gets uncharacteristically more monotone and rude around her.
  • Time Skip: The events of the "Loomings" arc take place a month after the events of the "Kingdom of Tyrants" arc.
  • Title Drop:
    • In Chapter 23, Weiss mentally refers to the road they travel on in Hell as "the Inferno Road", namedropping the title of the arc the chapter is set in.
    • Davoth namedrops the title of the "Kingdom of Tyrants" arc when he's giving a Breaking Speech to Ironwood.
      Davoth: Hell does not need to do anything to your precious, infallible Atlas. You will bring it down yourself, as monarch of a Kingdom of Tyrants.
  • Took a Level in Badass: Invoked. The Doom Slayer actively trains the students so that they will better be able to survive a demonic invasion or assault without him. After they survive the recent one lead by Professor Peach and succeed in protecting Amber, VEGA states that they've become capable enough to survive a demonic assault provided that they remain under the leadership of Jaune and Coco.
  • Tragic Keepsake: The Slayer does have one thing that survived Argent D'Nur's destruction that he's kept with himself for millennia: The Blazkowicz family engagement ring.
  • Training from Hell: In Beacon Academy's case it's downplayed, even when the Slayer is drilling Teams RWBY and JNPR they are not in fear of serious injury. It's implicitly played straight with regards to the Slayer and his youth spent with the Night Sentinels, however.
    Night Sentinel Drill Master: From this moment onward, shitlings, your existence is pain.
  • Troubling Unchildlike Behavior: Subverted. From the Slayer's perspective, Ruby going back to her chipper self after slaughtering demons and being casual about tearing Grimm to shreds, not to mention her obsession with weapons, comes across as unnerving for a 15-year-old girl. Really, Ruby's more of a Stepford Smiler who's trying against all odds to remain positive. The whole killing Grimm with a smile part is just naturally a part of a Huntress' lifestyle. This starts getting played straight as the bloodshed increases and she starts getting more murder-happy.
  • Ultimate Lifeform: Dr. Otto Merlot, for the longest time, believed the Grimm were perfect beings because of their biology and aggression, but after learning about the demons, he switches to them.
  • Underestimating Badassery:
    • Subverted. Ruby was under the assumption that the Slayer told her to go home and stop being a Huntress was because he didn't think she was much of a fighter. During one of her nightmares, her mother explains that his reason isn't because he thinks she's not cut out for battle, but because he doesn't want her to live the kind of life he does; an unending pit of death and damnation.
    • The students were under the impression that a majority of the Slayer's abilities came from his Praetor Suit, and that he'd be a sitting duck without it due to his inability to produce Aura. This notion is almost immediately dispelled after he casually dismantles Team CRDL without a shred of effort or his suit. If anything, the collective of Beacon's student body is more terrified of him than they already were.
      • Speaking of, Team CRDL did this in regards to the Slayer, to the point where they enter Too Dumb to Live territory. They're still squarely in this territory for the record.
    • Subverted. Qrow tries to pick a fight with the Slayer despite knowing full well what the Slayer is capable of, but he was mostly trying to keep him from telling Ruby something that Ozpin didn't want her to learn at that point.
    • Cinder and her associates all greatly underestimated him. They payed dearly for this.
    • Salem thought that she could easily manipulate the Slayer's mind. Not only was she wrong, but what she saw in his head was so horrific that even she's terrified of him now.
  • The Unfettered: The Slayer is absolutely unflinching in his drive to slaughter the Slaves of Doom and nothing, repeat: NOTHING, will stop him. Ozpin notes that he's also got at least a few shades of The Fettered in him; he has nothing to lose, yet understands what everyone else stands to lose.
  • Unfortunate Names: Ruby calls the Slayer B.J. for short. It takes all of three seconds for it to register what that means. Ruby reacts appropriately when she puts two and two together.
  • Unwitting Instigator of Doom: The God of Darkness. When he committed his genocide of the pre-history humans of Remnant, he inadvertently caused their souls to eventually be twisted into the first demons, giving rise to Hell and the Slaves of Doom. This would make him indirectly partially responsible for every act of death and suffering that the demons have inflicted on others over the eons since then.
  • Violence Is Disturbing: Since Teams RWBY and JNPR aren't constantly soaking in demon blood like the Slayer is, they have this reaction to the perpetual slaughter-fest that is fighting Hell.
  • Visual Title Drop: What happens in the chapter Kneecapped With A High-Powered Energy Pistol? The Slayer kneecaps Adam with his high-powered energy pistol.
  • War Is Hell: And boy howdy is it ever, especially when your foe is Hell itself. At this point, all of Team RWBY have endured Break the Cutie moments, and Fox was gruesomely killed by the Deag Grav.
  • Wanton Cruelty to the Common Comma: This trope riddles the story along with Rouge Angles of Satin, especially as the chapters go on, as if the author writes entire chapters in one sitting. While the author does make it a point to go back and revise the chapters to alleviate this when possible, it can still be irritating for first reading if you're a Grammar Nazi.
  • Was Once a Man:
    • Any of the Possessed count as this since they were once human. Just ask Fox.
    • The Slaves of Doom are actually former humans from ancient Remnant that had their souls fragmented when the Brother of Darkness wiped out Humanity during Salem's Rage Against the Heavens. The fragments were left adrift in the afterlife, filled with pain, rage, resentment, and all sorts of horrible feeling. They, with the power of the Brother of Dark that destroyed them, twisted their own souls and, through sheer collective anger at the Gods and Salem for doing this, warped the empty space of the afterlife to create Hell. Which also twisted them into the Demons we see now. After taking their rage out on each other for a time, the Demons eventually unite under the Icon of Sin to take their revenge on the Gods and Salem.
  • Well-Intentioned Extremist:
    • Aside from the Slayer's ruthless methods against demons and his enemies, he's also shown a willingness to take extreme action should they deprive Hell or Salem of a foothold, such as wanting to kill Amber to prevent her Maiden abilities from falling into the wrong hands should it come to that. This does fit his character, as he likewise destroyed the Argent Energy devices operated by the UAC in Doom 2016 despite knowing that it would have catastrophic effects on Earth, or In the Ancient Gods DLC for Eternal, despite not being canon to this story, he chooses to destroy the life force of The Father in order to prevent him from preventing him from killing the Dark Lord.
    • Professor Peach reveals that this is why she set up the demonic assaults on Beacon. To her, there is no stopping the war between Ozpin and Salem, and she truly believes that the only salvation is to wipe the slate clean, which translates to killing everyone and effectively sentencing them to damnation.
  • Wham Episode:
    • Chapter 20 reveals that Professor Peach was behind the demon assaults on Beacon Academy and ends with Team RWBY and the Doom Slayer getting sent to Hell.
    • Chapter 21 starts with the revelation that the demons are actually the fragmented souls of the first humanity that were killed during the Brother of Darkness' genocide of them in Salem's war against the gods.
    • Chapter 32 ends with Deag Nilox summoning the Brother gods to Remnant and binding them to the Pain Engine. Furthering this is that it's revealed at this moment that they know about and are familiar with the Dark Lord of Hell.
  • What Measure Is a Mook?: Played with. The major villains are hardly given any mercy and usually survive because they just manage to get away. The mooks, while usually treated with equal vitriol (particularly demons and White Fang), however...
    • When the Slayer killed several SDC officers complicate with their experiments, one of them calls out to her children as she dies from being sliced in half. This shocked him to the point where he shoots her in the head to give her a quick and painless death.
    • While Team RWBY avoids killing many of the guards, Ruby lethally wounds one in a way that horrifies her teammates, and Catrice desperately tries to seal the man's wound closed. Ruby, on the other hand, doesn't care.
    • Imps actually subject themselves to this trope. We see in the POV of one that they view their lives as insignificant and that their only purpose for existing is to live and die for the will of the Shadowlords of Hell.
  • Who Names Their Kid "Dude"?: When they learn the last name of the Slayer, Blazkowicz, several characters ask what kind of stupid name is that. The Slayer usually snarls that the name is his.
  • The Worf Effect:
    • A downplayed case occurs when Ozpin fights the Slayer. The battle happens off-screen and ultimately ends in a stalemate with the two of them bloodied and bruised, which shows that Ozpin is the ONLY person on Remnant that can fight the Slayer and hope to come out alive when he actually wants to kill you.
    • The Slayer casually puts Qrow in his place when he confronts him. Granted, Qrow was inebriated due to having several pain killers in his system, but considering the fact that Qrow is a Functional Addict when it comes to things like alcohol and the Slayer's track record against almost everything else in Remnant, he would've gotten his ass kicked even if he didn't have pain medication.
    • As seen in "Inferno Road I: Suffer", the demons conquered the Naruto world while the Slayer was out before the events of the story.
    • The Marauder becomes the first enemy the Slayer faces that pushes him to his limit. It took everything he had just to snap his neck, and even that wasn't enough to kill him. Yang even lampshades this.
      Yang: Didn't we back a ton of steel over him!? He's tougher than you, BJ.
    • The Broken-Horned Baron gets built-up in the beginning of chapter 24 as a powerful boss-demon that the Slayer and team RWBY will need to give their all to defeat. Showing how much tougher they are at this point due to the life threatening experiences, it's killed without much effort by them.
  • World of Badass: Remnant already was this thanks to having so shortage of kickass huntsman and huntresses, but add the Slayer and demons to the mix, and this goes up a notch. The fact that the Beacon students and most Huntsman can fight against the demons is badass in of itself, but the Slayer intends to make the students even more so to ensure their survival.
  • Would Hit a Girl:
    • The Slayer really doesn't care about things like gender when it comes to combat. If you're his enemy, he'll kill you without a second thought. The opening chapter alone has him brutalize White Fang members of both genders, with the female in particular getting her jaw punched clean off.
    • Demons don't care for gender. They'll mercilessly rip you to pieces and desecrate your corpse without any regret, be you male or female.
  • You Monster!: Eva's last words to Yang after the first-year kills her.
    Eva: M-murderer... You... murderer...
  • You Remind Me of X:
    • Thanks to the Slayer's Silver Eyes, Ruby finds herself being reminded of her mother when she's around him, which contributes to her closeness to him.
    • Ruby tends to remind the Slayer of his younger brother, Hunter Blazkowicz. This contributes to his protectiveness of her.
    • After seeing the Doom Slayer rush head first into the fray against Deag Nilox and the Tyrant, Willow was reminded of her father, Nicholas Schnee, due to the Slayer's bravery.
    • The Slayer actually sees a lot of himself in Yang, as seen in Chapter 31 when he reminisces back to when his brother was killed but replacing Hunter with Ruby and himself with Yang.
  • You're Nothing Without Your Phlebotinum: Discussed and ultimately averted with the Doom Slayer. A number of Beacon students assumed that the Slayer's abilities were derived from his Praetor suit and that he wouldn't be impressive without it. Needless to say, he completely disproves this notion.

The Slayer's eternal war continues...