- The almost unbearable tension from the start of the teaser to the first sign of gross otherworldly mayhem. Nothing's happening yet, but you just know this poor bastard is doomed... any... minute... now.
- The first five minutes of almost every episode. And a good portion of the rest. But especially Flight 627.
- A diabetic passenger on an international flight injects himself with what he thinks is his insulin, but is actually a fast-moving disease that first makes him ill, stagger to the lavatory, vomit on a stewardess, and then makes the flesh dissolve off his bones as it swiftly spreads to everyone else on the plane.
- Another episode involves a woman who emits a form of radiation when she's stressed that literally superheats the water in organic tissue. As a test, this woman is bound to a hospital bed and a rat is released into the room. She freaks out when it starts crawling on her, and the radiation makes the rat explode. This example is only made slightly less sickening when you see the heroes trying to re-create the radiation to test it and save the woman, they end up blowing up a papaya in a rather sticky spray that was made ironically more amusing when Walter Bishop refers to said papaya as "The friendliest of fruits"....
- Was that the same episode with the woman whose head exploded in the opening (after killing everyone else in the diner, thanks to that radiation spreading ability)? Yeah...
- A gas released on a public bus crystallizes, trapping the passengers inside like flies in amber. I, being one who rides the bus regularly, still get the shivers when I remember the crazy of the day for that episode whispering "I know what's going to happen on the bus..."
- A boy is surfing the web when a popup Blip Vert entrances him. A hand reaches out of the monitor, deforming it, and grasps the boy firmly by the head, boiling his brain inside his skull.
- A college professor is lecturing about virology. He starts to choke and sputter, then collapses. His TA attempts to give mouth-to-mouth, but pulls off when something bulges out his neck and starts to climb out of his mouth: A spiney looking slug.
- Ironically, it's a supersized cold. Which immediately makes the thing Nightmare Retardent for people with a biology or medicine background; for reference real viruses look like this. They also don't get much larger than a few microns across. You can drink that water in peace now, maybe...
- It could be modified (multicelluar?) or something? *pushes away water glass*
- Later explained on Walter's notes on the website, where Walter explained that he was wrong and it wasn't a cold virus but in fact a mutated, oversized stomach cell.
- The random newsagent who gets a two dollar bill and then his orifices seal up. His nose, his mouth, his eyes, and he suffocates. It gets worse when Walter asks if anyone checked his anus and penis to see if those sealed too. It gets even worse when they try and get the guy responsible; one of the agents is exposed to the same chemical, and the main character tries to save him via a tracheotomy. The skin simply eats the trach.
- The Bishop family weaponise it in "The Bullet That Saved The World". Windmark calls it barbaric.
- "Jacksonville" provides some absolutely terrifying Body Horror with a building from Over There colliding and merging with a building Over Here, fusing the two buildings together, along with all its inhabitants. Made that much worse by Astrid's refusal to dissect the body of a man fused with his alternate. When someone who works every day on fringe cases with Walter is upset by something, you know just how extreme it is.
- The Russian cosmonaut that became host to some sort of Radiation Vampire from space.
- Some other terrifying deaths include being eaten by an evil mole baby, the toxin the disintegrates your bones (creepy doll optional), a were-hedgehog ripping apart a plane full of people, David Robert Jones' exit in season one and four, THE PREGNANCY IN EPISODE TWO, having your pituitary gland removed while you are completely conscious, walking through walls failure, being bludgeoned with a suitcase by someone sleepwalking and thinking you're a demon from hell, the beetles that rip their way out of their human hosts while they're alive, several instances of brains melting, your heart being cut out and only dying hours after, contagious, immediately fatal cancer, rapid aging, acute exhaustion, spontaneous combustion, nanites, at least two instances of heads exploding, BEING DEHYDRATED ALIVE WHILE SCREAMING/PLEADING WITH YOUR KILLER TO RELEASE YOU, being drain of radiation until you were nothing but ash, a zombie being thrown into a turbine, the giant hookworm thingy, jumping out of a window because you've been infected with a thousand year old virius, a hallucinogen that can make your throat slit itself, being chopped up by butterflies, being suffocated with cling wrap...
- In the Series Finale, most of these splendid deaths get a little... let's call it a Hall of Fame run.
- Detective Olivia in "Brown Betty" getting trapped in a wooden coffin and thrown into the ocean, simultaneously suffering from claustrophobia and slowly drowning. And Walter is telling this story to Olivia's innocent little niece Ella. Surprisingly, Ella seems fine with the subject matter, as long as it makes for a good story.
- The Marionette. The ballet dance. Good grief... the ballet dance.
- The end of this video. And be sure to watch ALL the way to the end.
- Walternate and evil!Brandon
- Particularly Walternate's grin in 'Bloodline'. Brrr...
- The look of utter loathing Walternate gives Olivia every time he sees her. Especially when he pulls her out of the tank in "The Abducted". And it makes a disturbing amount of sense considering she was the one who convinced Peter to stay.
- Olivia's deadpan statement "...But, I think he's the man who's gonna kill me." Complete with Scare Chord. Watch here.
- The Man in the X T-Shirt himself is Nightmare Fuel.
- Getting erased from existence is fairly disturbing in my opinion.
- You think that's bad; suppose you manage to undo it, and then find out that no one you love remembers you. Oh, and you had a son you didn't even know about until after he'd been erased as well.
- Olivia's situation in season 3 is somewhat similar. Imagine being all alone with a single ally in the entire world. Literally. Not to mention the light deprivation torture, experimentation, imprisonment and potential organ removal (while conscious!) with little or no chance of rescue.
- Olivia's nightmare (daymare?) in episode two. Especially Broyles.
Broyles: Were you... safe? You weren't were you.
- Seeing a corpse that looks exactly like you is a pretty frightening idea.
- The episode "Bad Dreams." Especially the beginning. Ironic Nursery Rhyme. A woman alone with her baby in a creepy, empty train station. The train is coming. Someone is coming up to her. Then fricking Olivia Dunham shoves her onto the tracks with this utterly blank look on her face.
- The other nightmares, which include Olivia guiding a woman's hand to slit her own throat and guiding another woman's hand to stab her husband, are equally terrifying.
- You've just been kidnapped. You rescue yourself because you're a Badass. You wake up handcuffed to a hospital bed. Again. With a sex offender sitting by your bed. Who doesn't like you.
- Crazy Walter... lovable old man who likes candy. Walter with his brain rejuvenated? He frigging cuts off William Bell's hand and leaves him in suspended in amber. Holy shit.
Walter: *smile* And how are things on your side?
- Considering the douche was just standing around, chatting causally while Astrid was bleeding in Walter's arms (shot by his men) and turned Olivia into a Apocalypse Maiden... you can see where Walter was coming from. You can also add William Bell to Nightmare Fuel list.
- The reason why Walter had those pieces of brain removed in the amber timeline. William Bell's plot was all his idea and he knew exactly how to pull it off. Damn.
- This was alluded to way back in Season 2.
- The Observers, especially in "Letters of Transit".
Windmark: Hello, little girl.
- Windmark killing Etta. Because instead of unceremoniously shooting her in the head like a nice monster who isn't emotionally invested in such things, he chokes her first, takes the time to ask about the bullet necklace (while he's nonchalantly choking her), realizes that the reason Peter bought it for her was because he loved her, and then shoots her in the stomach so she can slowly bleed to death.
- Windmark versus Peter is terrifying for two reasons. One, for an emotionless Transhuman, Windmark sure looked pissed off. Two, Windmark shows Peter Etta's final thoughts. Apparently the only emotions Windmark is capable of are sadism and anger.
- Windmark stops smiling when Nina Sharp tells him why he and the rest of his kind sucks. The look he gives her...*shudder*
- Speaking of that episode (Letters Of Transit), the Special Edition Title. Yeah, the mere opening credits themselves. "So it's a bad future, which words are going to be used... oh". Holy Shit Quotient Up to Eleven.
- That one Observer in "Letters of Transit" who forces the woman at the club to sit on his lap. They're supposed to be emotionless but it was fairly obvious what they were implying. Her employer rescues her but still. Rapist who can teleport, brutally read your mind and catch bullets? No, thank you.
- Reanimating Jessica. Eyes should not be doing that.
Ding ding ding. My bicycle. My bicycle is blue and has a little chimey bell on it. Ding ding ding. My bicycle is blue and has a little chimey bell.
- Let's not forget her distorted voice.
- All while talking like she's a little girl.
- The bad guy from "A Short Story About Love". Dehydrates husbands alive, takes their pheromones and the tries to use them to sleep with (read: rape) the grieving wives. When the women wives realize that this guy is not their dead husband, he suffocates them with cling wrap. He tries to play the sympathy card and, unlike a lot of the other villains on this show, it really does not work.
- David Robert Jones. His partiality to inflicting Body Horror on unsuspecting innocents, his electric torture of Nina Sharp from the alternate universe, the fact that he outplays both Fringe teams, his creepy politeness, his brutal beating of Peter Bishop with a crowbar even though he probably could have just shot him or infected him with some kind of parasite... he's terrifying.
- David Esterbrooke's threat to Olivia. "I'm sure you'd want to start a family some day. It'd be a shame if something got in your way." Consider what that guy had been doing to women during that episode... *shudder*
- Meana Sharp. Because a bitchy alternate version of your surrogate mother drugging you in an attempt to destroy your universe is terrifying.
- Doubles as a terrifying situation for Nina Sharp. She's got her alternate who can get into the most secure part of Massive Dynamic, a sadist like Jones and the man she loves (who also happens to be a Mad Scientist capable of pretty much anything) all conspiring to use her surrogate daughter to destroy two universes (which also includes Rachel's family).
- How the Observers torture Walter. Even complete with capillaries in his eye bursting. It makes it that much worse that he's having a seizure during all of this and trying desperately to protect his granddaughter.
Windmark: You seem much more interesting as a human being... than as a vegetable. But all things being equal... I don't care which one you end up.
- The Japanese woman in the Black Market in 5x01. Just... sitting there. Not saying word. Just staring. There could be any number of nightmare-free reasons for this. Given the time and place... she's probably been mind raped.
- Simon's fate. Damn.
- The removal and reinsertion of Observer tech into Peter Bishop. The surgery itself (particularly the way the device seemed to activate on its own and attaches itself to his spinal cord, the dripping blood and the fricking twitching from the Observer) and the potential consequences. He's either going to Take a Level in Badass or bad things will happen.
- The wormholes in 5x05. One dimensional portals looking into nothing but black.
- The end of "Through the Looking Glass and What Walter Found There".
Observer: I know what you have done. You have made a grave mistake. You do not realize what is happening to you.Peter: *neck snap*
- Windmark watching and the Psycho Strings playing in the background do not help matters.
- Peter reading Olivia's thoughts and then pulling out chunks of hair.
- Some of Walter's hallucinations in "Black Blotter" include images of Carla Warren's burnt corpse, somehow ending up in Observer ridden Manhattan with no idea how he got there and evil!Walter starring back at him.
- Those who had bad experiences with psychedelics might find Walter's sudden shift from downtown Manhattan to the boathouse and all the requisite disorientation distressingly familiar.
- The Creepy Doll in "The Human Kind" was.... creepy.
- The goddamn noise you hear when someone is getting Mind Raped by Captain Windmark. That one, high pitched note... you hear it first and then you see his victims shaking and/or bleeding from various orifices.
- The only way to stop Windmark from brutally reading you and dooming the people you care about and/or the entire world is to either piss him off enough so he'll kill you himself or shoot yourself in the head.
- Michael, Donald's son, giving himself up to the Captain Windmark to save the others.
Windmark: *Slasher Smile* Hello
- What makes it worse, is how Windmark just short of gets into Michael's face.
- The whole thing regarding Michael, who takes the creepiness inherent to Observers and gives it a twist, being a Child and an actual eccentricity even for Observers.
Nightmare Fuel / Fringe
Fringe has a lot of scary stuff.