History NightmareFuel / RemnantInferisDoom

** Scarier still is what the demons do to the Grimm. They have no souls and can be possessed easier than any human. Their bodies can be manipulated like clay; in chapter 15 an Alpha Beowolf was turned into a goat-like being that was inert until a possessed body was kicked into it. The "idol" was possessed and had to be blown apart with a super shotgun shot to be killed, even creating a maw with ''rows of teeth from his chest and tentacles'' to grab the Slayer! BodyHorror doesn't begin to describe it.

** The state that Sun is found in is really disturbing. The Slayer finds him completely naked and beaten. When he approaches the cell door, Sun backs away and admits that they did "things" to him. Just what the Hell did they do to him?

* The Marysville Cathedral. Picture a ritualistic mass suicide where men, women, and children slit their throats, leaving an entire church of corpses rotting in death and decay.

* The nightmares that Team RWBY goes through get incredibly morbid.

*** If that wasn't bad enough, she then tries to drown her daughter in blood and rot, all while her daughter begs for help.

* In Chapter 27, we discover how horrific were the experiments the SDC was doing with captured Faunus. The most horrific is the one explicitly inspired by ''Film/EventHorizon''. Multiple Faunus were brought to a chamber and exposed to special pheromones, resulting in all of them '''raping and killing''' each other. The goal? To summon a demon with this death orgy, [[ForScience all for the sake of their experiments]].
-->"Team SSSN had thought they had seen the extent of what evil was capable of during the demonic invasion of Haven Academy. How naïve they had been."
** As the Slayer and his impromptu fighting force prepare to take on Cordovin, it's shown that the '''Marauder''' is in the facility and is now culling everyone inside as he makes his way towards his foe. God help them.

* Davoth's first appearance as a dark, ghostly apparition is terrifying. He casually deconstructs Ironwood psychologically and leaves him trembling in fear, and damn near ''kills'' Ruby, Tai, and Yang when they attempt to fight him. Something to keep in mind is that this is just a ''shadow'' of Davoth; less than a fraction of what he can accomplish. If that is but a taste of what the Dark Lord can do, then there is much reason to fear him.

* Once the Slayer wakes up, shit hits the fan for the White Fang, as he slams one's head into his pod hard enough to jam his nose into his brain, outright ''punches the jaw clean off'' of another, and blows the head off the last one. The kicker with the one who got her jaw punched off? ''She was still alive!'' The only thing she could do was desperately crawl away as the Slayer splattered her brains all over the floor. And just a friendly reminder, the character subjecting the White Fang to all this brutality is the '''[[GoodIsNotNice good guy]]'''!

* Davoth's first appearance as a dark, ghostly apparition is terrifying. He casually deconstructs Ironwood psychologically and leaves him trembling in fear, and damn near ''kills'' Ruby, Tai, and Yang when they attempt to fight him. Something to keep in mind is that this is just a ''shadow'' of Davoth; less than a fraction of what he can accomplish. If that is but a taste of what the Dark Lord can do, then be very afraid.

* Deag Grav's killing of Fox in Chapter 15. It's so sudden that nobody has time to react to it. Even more so is how the Argent energy tears him apart from the inside, and then Deag slices him in half vertically from his torso ''upwards''. To make matters worse, his corpse comes back in the next chapter, but BodyHorror abounds. In short, he tries to strangle Coco using ''his own intestines'' as '''tentacles!'''

** Ruby's is probably the worst of them. In Chapter 11, she wakes up naked, surrounded by blood, flesh and guts. She then hears a voice behind her, which turns out to be her mother. Before she can run up to hug her, it's revealed that ''this'' Summer had her ''[[EyeScream eyes bored out of her sockets]]'' and has a giant, bloody hole in her stomach, indicating that her womb was '''torn out of her body'''.

'''Warning! As per Wiki policy, all spoilers are unmarked.'''

* Once the Slayer wakes up, shit hits the fan for the White Fang, as he slams one's head into his pod hard enough to jam his nose into his brain, outright ''punches the jaw clean off'' of another, and blowing the head off the last one. The kicker with the one who got her jaw punched off? ''She was still alive!'' The only thing she could do was desperately crawl away as the Slayer splattered her brains all over the floor. And just a friendly reminder, the character subjecting the White Fang to all this brutality is the '''[[GoodIsNotNice good guy]]'''!

** Ruby's is probably the worst of them. In Chapter 11, she wakes up naked, surrounded by blood, flesh and guts. She then hears a voice behind her, which turns out to be her mother. Before she can run up to hug her, it's revealed that ''this'' Summer had her eyes bored out of her sockets and has a giant, bloody hole in her stomach, indicating that her womb was '''torn out of her body'''.

** They also capture team SSSN and torture them for answers. Team SSSN was just in the wrong place at the wrong time, having been hunting demons that wandered into the areas near the facility. Nobody, neither human, Faunus, young, or old, is safe from them.

** When she sees Jacques holding the Slayer's helmet, her first instinct is to ''[[{{Fingore slice off all his left hand's fingers]]'' and leave him in pain. She then picks up the Slayer's helmet, stares at her reflection in it and just...smiles. As if she's ''proud'' of herself for what she just did.

** When she sees Jacques holding the Slayer's helmet, her first instinct is to ''slice off all his left hand's fingers'' and leave him in pain. She then picks up the Slayer's helmet, stares at her reflection in it and just...smiles. As if she's ''proud'' of herself for what she just did.

** When she sees Jacques holding the Slayer's helmet, her first instinct is to ''slice off all his left hand's fingers'' and leave him in pain. She then picks up the Slayer's helmet, stares at her reflection in it and just...smiles. As if she's ''proud'' of what she just did.

* Once the Slayer wakes up, shit hits the fan for the White Fang, as he slams one's head into his pod hard enough to jam his nose into his brain, outright ''punches the jaw clean off'' of another, and blowing the head off the last one. The kicker with the one who got her jaw punched off? ''She was still alive!'' The only thing she could do was desperately crawl away as the Slayer splattered her brains all over the floor.

** When she sees Jacques holding the Slayer's helmet, her first instinct is to ''slice off all his left hand's fingers'' and leave him in pain. She then picks up the Slayer's helmet, stares at her reflection in it and just... smiles. As if she's ''proud'' of what she just did.

* The nightmares that team RWBY goes through get incredibly morbid.

* The fact that a wrong word in the satanic rituals can kill the cultists is also terrifying. The cultists in the cathedral misread a syllable, and it alone was enough to kill everyone in the room with the exception of Fiola.

Take the {{gorn}}-filled brutality of ''DOOM'', add in ''RWBY'''s CrapsackWorld elements, and let horrors await.