Not to mention that they even unsettle the members of their own team.
Heavy: I fear no man, but that thing... it scares me!
The ending. The BLU Sniper begs the Pyro for help. Pyro's response? Flamethrower to the face. At point-blank range. And after the signature outro, the Pyro is shown walking through Pyroland, then zooms out to reveal a gaping hole in the BLU Soldier's torso, who's holding his organs in his hands, and dies as he falls down. Then it zooms out furthermore to show the massacred BLU team with the Pyro whistling to the song playing in Pyroland while buildings burn down. Yeah.
It doesn't help that in his head, they're bopping along with the music happily. Change to real life, and they're just walking sinisterly.
The screams of pain from the other classes in "Meet the Sandvich" are chilling. While rather hilarious, just trying to imagine the images the Soldier and Scout are providing is enough to make you shudder.
Scout: HE PUNCHED OUT ALL MY BLOOD!!
Just about the first half of Meet the Medic. The Medic is literally holding the Heavy's heart, and it explodes. Oh, and lest we forget that Heavy is fully conscious throughout the entire operation.
Although the horror factor is mostly subdued due to the fact that the Heavy did not seem to feel any pain (apart from the breakage of a rib bone). He even laughs to the Medic's joke while his organs are exposed.
In game, if the Scout is killed in such a way that he's completely eviscerated, there is a 1 in 100 chance that a dove will fly out of the carnage.
Expiration Date: Apparently, bread gets green fleshy tumours when put through a teleporter... which can turn into monstrous abominations if put through a teleporter multiple times.
Actually it's just some sort of self-aware beauty mark, doesn't make it any less terrifying however.
What about all the Heavies with Sandviches that go through teleporters?
The bread they used was made from dolphin milk, who were fed only pre-chewed grass. So Heavy's sandwiches should be fine.
Comics and Other Supplemental Material
The online comics can be straight-up disturbing at times:
Blutarch Mann: Every day I'm dead a little longer, Mr. Conagher. I have seen the other side. There is nothing there. FIX. THIS. MACHINE.
It is possible that the reason why he thought there were nothing on the other side is because his Life Machine keeps him in a 'in-between state' where he is neither dead or alive. When they finally did die, they became ghosts fueled by their spite for each other, and then literally tried to send each other to hell.
Even some of the funny moments had a scary side. For instance, Gray was swiped out of his cradle by a female bald eagle, who raised him alongside her chicks. The way it's portrayed in the comic is funny (The bird arrives with an Unsound Effect of EAGLE!! as it crashes through a window), but this scene is immediately followed by Gray revealing what happened when he came of age: He killed the mother eagle and her chicks, then ATE THEM.Redmond and Blutarch are visibly repulsed.
Then, as seen in this page, he wins. The Administrator - the most powerful, controlling character in the whole Team Fortress 2 universe to date - runs away, and leaves a one word message to Miss Pauling: HIDE.
Some time before the 2012 Halloween update, the Spy's head in the website banner became a skull. While not that scary by itself, there was no other indicator to it, so you'd be simply looking at a blog and give yourself a Jump Scare.
Skulls in general tend to have a neutral expression, but Spy here seems to be... in pain...
Not to mention the dread it can fill you with if this happens to be a Heavy who's got you pinned down, or an ‹berCharged Pyro, period. Those horrible, glowing eyes staring you down as they laugh maniacally, slicing you to ribbons with a stream of crit bullets or catching you in a stream of unkillable fire so horrible it singes your very soul. Horrifying enough the first time, no less, and even worse when you've gotten to a thousand hours of total playtime and are all too familiar with the death that will soon take you.
Cranked Up to Eleven with Mann vs. Machine's giant robots. The sight of an invincible, colossal robot Heavy, or a whole army of Crocket Soldiers, or giant Claymore-wielding Cyclopses is the stuff nightmares are made of.
You see that nice, shiny sword the enemy Demoman has? You may not realize it, but it's talking to him. And it wants your head.
Going hand in hand with Fridge Horror, consider the phrases some of the characters say "I'm back!" and "killing you is full-time job" These guys know they're continuously dying and coming back to life... exploding into pieces, all the screams of agony, just for your entertainment...
In Poker Night at the Inventory, the Heavy claims that the respawn system puts him through a series of (seemingly) endless nightmares before spawning again.
The Horseless Headless Horsemann. An Axe Crazyundead juggernaut that is completely immune to all forms of knockback and slowdown, and is only outpaced by the Scout. Not only that, by the time a round is over, he's usually inside a very tight-spaced mansion where the usual maneuverability is incredibly difficult. Imagine turning a corner and seeing this guy◊ screaming down the hall towards you, laughing like a maniac.
Whenever you backstab someone with a Your Eternal Reward, the body of your victim instantaneously fades away. The reason why this happens is even more horrific: the weapon's positive attribute ensures that no trace can be found of the victim, meaning that the kill will not appear in the killfeed to the victim's teammates; just like how someone mysteriously disappears in a horror film. Even worse, the Spy who stabs with this knife disguises as his victim instantly, making the YER Spy a much more terrifying adversary.
The new voice lines added for Medic for Mann vs. Machine show that he's become a bit more... unhinged.
That video had a bit of Nightmare Fuel itself. Hearing him scream that his various teammates are dead, one after the other, is a bit more upsetting than would be expected from this game. The surprising amount of anguish in his voice doesn't help.
Generally, at any rate. Sometimes they actually get bored, or make comments about the pit - it seems scary until the Spy dryly states, "Well, come on, I don't have all day." It is a bottomless pit, after all.
The Halloween version of Coaltown, which turns the robots into zombies, doesn't seem like much. And then you see that there are hundreds of zombies coming for you in a single wave...
The zombies' movements are also pretty unnerving, e.g. Pyros flail about randomly while always firing their flamethrower.
In the one seen for the Medic, he checks his pulse before falling backwards, dead. Imagine feeling for your pulse in the last seconds of your life, only to feel nothing but... well, nothing.
Mild, but still qualifies. If when defending in Egypt a point is lost, it closes down the first spawn point. Should you respawn in the few seconds before the doors shut, I woefully hope you're not claustrophobic.
One of the Bombinomicon's lines in Scream Fortress 2013, when you get into Hell:
"Okay, twist ending guys. Here comes the big twist! I'm an angel, and we're in Heaven! This was a test all along! No, I'm pulling your leg, there is no Heaven. There is Hell in every direction."
Hats are usually funny little cosmetic items the mercenaries wear. However, some hats and miscellaneous items ("miscs") are a little disturbing, especially the Pyro's. Here we have the Pyro's head used as a drinking glass, Pyro as an undead astronaut, and finally, what happens when the Pyro isn't given the courtesy of Pretty Little Headshots, seen here.
An entire thread full of scary shit from Team Fortress 2. There's a little bit of everything in here, from natural things in-game to community-created stuff to...this.◊
The entire cp_cloak map. It's a Valve developed map, by the way.
The achievement map "Achievement_Tunnels" made and hosted exclusively by Golden Machine Gun (an achievement group) has a sewer. The sewer contains a ghost called "The Dystopian". He finds you. If you're found, he kills you after an earthquake with a red thing on your screen. Terrifying for the first time, but annoying after a few more times. Also, it's much creepier when if he doesn't find you, just because he's targeting someone else, but passes by you, you start to feel sick and an acid trip starts, giving you a distorted view of the map.
The Achievement_turbo map also has a hidden room as an Easter Egg which only particularly agile classes can access. There is a large red button in it. Press it, and you get locked inside with a Scare Chord and are confronted by the infamous Painis Cupcake, who then lunges at you. We all know what happens next...
To clarify, for the faint of heart, the video is like this: Heavy's in a corner and says "Scouts everywhere!", only for Scout to reply "Yeah, huh-ho!". Cue the room literally filled with Scouts sporting Slasher Smilesforced on their own character models, and then the camera cuts to the outside of the building with a Scream Discretion Shot (the scream is obviously Heavy's). As for the ending mentioned above, it's a relatively simple The Fourth Wall Will Not Protect You moment. A lone scout suddenly appears on one side of the screen, waving his hand and saying "Hi, mom", only to growl immediately afterwards and lunge at the viewer.Cue static. If you have annotations on, the video even pauses before the Scout lunges at the camera and tells you to click out immediately.
This... video. This would best count as Lightmare Fuel because on the one hand, the broken textures, the Giant Heavy flipping shit, and the Chicken/Raptor/Barney head are funny. The rest... well, the rest is not.