Nightmare Fuel / Gravity Falls

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"SHOULD I BE ONE, OR THE OTHER? HOW ABOUT BOTH?"

"Heheh, good luck sleeping tonight!"
Soos, "Into the Bunker"

As Gravity Falls is full of the paranormal and supernatural, it's no surprise that it's full of Nightmare Fuel, especially for a kids show.

Most spoilers up to "Not What He Seems" are unmarked.

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     General, Shorts, and Dipper's Guide to the Unexplained 

General
  • Right off the bat, it's worth noting that the entire show tends to maintain a vaguely creepy tone at all times, even when it's being lighthearted, heartwarming or funny. The general mystery of what's going on in Gravity Falls is all there, in the background or the foreground, constantly hanging over the show like a grim reminder of everything you know, or don't know, about this weird little town in the middle of Oregon.
  • The creepy whispering in the intro, along with those unsettling chords and flickering subliminal imagery, and the dying/fading on the last note, from the intro will never cease to send a chill down your spine.
    • It's "Three Letters Back" in reverse — the cipher for the initial end-of-episode codes. It eventually switches to other messages when the cipher changes accordingly. Still pretty creepy, though.
    • Before figuring out that the message was in reverse, many fans assumed that the phrase was, "I'm still here".
    • STAN IS NOT WHAT HE SEEMS
  • Bill Cipher, full stop. Introduced near the end of the first season, he's described as the most powerful and dangerous being in Gravity Falls, and while a very strong target of Love to Hate among the fandom, everything about him is unsettling at best and horrifying at worst. To elaborate:
    • He's a demon. No kid-friendly minced expressions here; he's explicitly identified as a demon.
    • He's completely insane and impossible to predict. Besides talking, his very first on-screen action was randomly ripping the teeth out of a nearby deer, showing them to the person who summoned him just to give them a scare, and then putting the teeth back in and acting as if nothing happened.
    • However, despite this, he seems to have near-omnipotent intelligence. The casual way he talks to the characters makes it seem like he's constantly one step ahead of them; like he can predict every individual thought and motive that goes through their heads and always knows the exact words to say in order to play them like a fiddle. He may have very limited power over the physical realm, but every time you're near him, you get this underlying feeling of helplessness.
    • He has the power to enter your mind and read as many of your memories as he pleases. And if you want to defend yourself from this, you're apparently going to need something as drastic as a metal plate embedded into your skull.
    • If he's able to persuade you (which, again, is very easy for him), he can take over your body. And he has no regard for your body's physical well being when he does so; quite the contrary, he goes out of his way to abuse it as much as possible.
    • I'M ALWAYS WATCHING YOU NERDS. ALWAYS.
    • Bill answered a bunch of questions from the show's fans on Reddit. Some of his replies were funny, others were darkly comedic, and there were a fair number that... weren't very nice.
    • This little tidbit from the Reddit AMA is especially unsettling, considering there are images of Bill freaking everywhere in Gravity Falls (you just have to look carefully to find them, they're easily missed). And that's not counting all the Bill merchandise and fanart and such in Real Life...
    "INCREASING MY POWER IS EASY AND ANYONE CAN DO IT! JUST DRAW MY FORM ANYWHERE IN YOUR HUMAN WORLD - EACH IMAGE OF ME ACTS AS A PEEPHOLE FROM MY DIMENSION TO YOURS, THE MORE I SEE, THE MORE I KNOW. THE MORE I KNOW, THE GREATER MY POWER. THE GREATER MY POWER, THE MORE ENEMIES OF YOURS I CAN CRUSH. JUST SHAKE MY HAND"
    • When asked on that thread what his long term plans were, he responded "I'M THINKING OF BRING BACK MKULTRA" This does not bode well at all...
    • Want a little more Paranoia Fuel? Pay close attention to the pictures of Bill on the journal page Gideon uses to summon him. It's at 0:10 seconds of this video. There's a picture of the triangle symbol that's on every dollar bill in America, with the caption "HE'S IN MY WALLET!" That's right. You have bills on you? Then you literally have Bills on you - he can see you through all of them.
    • In "Dipper and Mabel Vs. The Future", he finally achieves a goal he's been working towards for a billion years: being the harbinger of the apocalypse.
      • Also, in the preview for the next episode, Bill is missing from the end of the opening credits! As in, there's a blank spot where he usually is...
    • Another point from the AMA. Bill opens it after his introduction with a video giving proof that it's him. What is the video? A timelapse of a real life decomposing rabbit.
      • As seen in "Weirdmageddon III", He has no problem with harming children and even claims he "wants to make corpses out of the twins" and was about to kill Mabel for the heck of it!
    • Bill has always been a weird mix of knowing he's an animated character and being summoned from the real world He only talks to the viewers via the cryptograms (sometimes threatening the viewers, sometimes just adding in fun info) , and by taking over Alex Hirsch. There is a physical Statue of him in Oregon. A few times he's looking at the viewers through the screen. He's not all the way like Deadpool where it loops back around to being fictional. Nor is he openly fictional like Dipper. It's a weird, unsettling, mix between the two that makes you wonder if he is, somehow, actually real.
  • The "Shop at Home with Mr. Mystery" shorts, while amusing, have one or two creepy points. In two of them Bill Cipher somehow manages to call the Mystery Shack! And his offer to Stan in the ad for the Nacho Necklace
    "How about you keep the necklace, and I'll take…YOUR SOUL…" (Ominous sting)

Shorts
  • We get to see Gideon in prison. He's clearly got a huge amount of influence, and the people he's lording over are clearly pretty unstable, and coordinating a mass breakout is hardly beyond his means...
    • That aside, the fact that a child who might be no older than 10 would be put in a maximum security prison with people who have probably done some horrifying things to end up there seems like a big concern.
    • We get more Yandere antics from our favourite Creepy Child in Creepy Letters from Li'l Gideon. He sounds rather unhinged when he mentions counting the bricks in his cell, and says he hopes he'll see Mabel "real soon".
    • There's a sequel out now;
      Gideon: I'll be getting out of here before you know it. Can't wait to together with the ol' book club: you, me and Bill Cipher! Let's see how YOU like being tickled... in your soul.
  • Octavia the 8-legged cow from "Mabel's Scrapbook". She looks harmless enough... until she zaps a passing eagle with her Laser Eyes and eats it with her Overly Long Tongue.
    Stan: Run.
  • The promotional short, Creature in the Closet, ends with Dipper slowly opening the closet door...only for the creature to lunge out of the closet, and attack him and Mabel (off-camera). The sudden Jump Scare, as well as Mabel's voice becoming distorted and glitchy as the camera's batteries die out, likely scared a lot of small girls who were watching Disney Channel when this aired, and proved that this show was not going to be your typical Disney show.

Dipper's Guide to the Unexplained
  • "Stan's Tattoo" has Stan go berserk when Dipper tries to look at his tattoo.
    Stan: I'M GONNA FIND YOU KID!!!!
  • "Lefty": Dipper spies upon a man who never turns right and literally does everything left. Then Dipper later gets him to turn around and he's not human, but a robot controlled by tiny little creatures. The Reveal was both creepy and unexpected (if also a bit hilarious).
    Creature 1: The time has come, brother!
    Creature 2: I can't! I have a family!
    Creature 1: You signed the oath! (both swallow poison and die)
  • The "Tooth" short. Dipper finds a giant tooth on the shore, and tries to figure out where it came from. As he and Mabel row out into the lake to find out, it's revealed that the tooth came from a huge monster with an ugly human-ish face disguising itself as an island, which then rises up from the water to attack the twins.
    • Here's what it looks like. It's not pretty.
    • If you look closely when it chases after the kids, you can see a SKELETON hanging off the bottom of it.
    • It also speaks backwards, and here's what it says:
    "You have awoken me from my slumber! Enter my mouth, children! ENTER YOUR DESTINY!!! RAAAGH!"
    • Bear-O, Mabel's creepy and disformed bear puppet, is also pretty creepy.
  • The Hide Behind, a mysterious creature that no one has ever seen, as it is always living up to its name and hiding behind everything. It has a rather creepy design, although fortunately it doesn't do anything harmful or malicious.
  • Watching all of the shorts and then putting the pieces at the end of them together nets this wonderful image.
    • When you decrypt the Red Code along the edge, it spells I WAS SO BLIND, HE LIED TO ME, THE DARKNESS IS NEAR. Becomes even more chilling after watching The Last Mabelcorn, and realizing that "he" refers to Bill.

Legend of the Gnome Gemulets
  • A conversation with Grunkle Stan has him recount being present for the twins' birth, recalling the day fondly. That said, while he happily mentions that Mabel came out swinging, having punched the doctor that delivered her, he also reveals that Dipper nearly died from asphyxiation as a newborn, having been strangled by his own umbilical cord to the point that his face was blue.

Journal #3
  • The newly released book of lore has a lot that never would have flown on the show, dark as it was. Examples:
    • Where did all those zombies in "Scary-Oke" come from? the flood shown in "Northwest Mansion Mystery" washed all the lumberjacks' graves down to the land where the Mystery Shack was later built.
    • Both the Soothsquitos and the Hand-witch attempted to warn Ford about Bill.
    • The Shapeshifter grew malevolent all on its own, and it's first attempt at stealing the journal involved impersonating Fiddleford after tying him up in a closet.
    • The blood on Bill Cipher's page? came from Ford's eye as a result of the times he'd allowed Bill to possess him.
    • After the sock opera, Mabel found a note Bill had written while possessing Dipper. He planned to kill Dipper's body after destroying the journals and make it look like a suicide, leaving Dipper trapped as a mindscape ghost forever.

    Season 1 

Tourist Trapped
  • A bunch of gnomes wanted to kidnap and marry Mabel, a little girl, which is unsettling as it is. That's not even considering the fact they can be old even by human standards.
    • They were rather feral when Dipper comes to rescue Mabel, one of them attempting to eat Dipper's face off.
      • And then there's the big gnome monster that they all form together...

Legend of the Gobblewonker
  • McGucket has made these robots before, and has used them on populated areas just to get attention. As is hinted later, this is probably him being nice.

Headhunters

The Hand That Rocks the Mabel

The Inconveniencing
  • Mabel becomes possessed by a ghost, which is pretty creepy to witness.
  • The cooler monster. Word of God says it'll never be explained.
  • When Dipper turns around and sees that his and the others' reflections have become skeletons.
  • The fates of the teenagers that the twins venture to the store with: Being trapped inside a television screen, a video game, a cereal box cover, and a hot dog that's being cooked.
    • And judging by the sound effect and reactions of the characters watching, the cereal box one was a Gory Discretion Shot.
      Cereal Box Bird: I'm bonkers for eating you alive!
  • More "Getting Crap Past the Radar" than Nightmare Fuel. But it's really really surprising the show was allowed (being Disney) to get away with using the word "Murder" and showing two corpse outlines. Darker and Edgier Disney indeed.

Dipper vs. Manliness
  • The pain hole. Whatever it is down there, it makes even the biggest Manotaur scream.
  • We get introduced to the apparent leader of the Manotaurs... only for him to be devoured on screen by the real leader mere seconds later. This scene is bad enough, but it's implied that this is a regular occurrance.
  • The leader of the Manotaurs pulls a spear out of his chest, with screaming and blood and everything.

Double Dipper
  • The copy of Dipper's dismembered arm. It crawls towards Dipper, with unnerving music playing, and then it just bubbles and melts away.
  • Paper Jam Dipper, an irregular and deformed copy of Dipper. While Played for Laughs, it still doesn't feel, look, or sound... normal, unlike the other copies. And then it welcomes its death.
  • The mere possibilities of a machine that can produce clones of anyone without limit. Suppose Gideon found it? Just one of him was almost enough to take over the entire town, imagine an army of Gideons.
    • Although, given his nature, they would probably get even less done than the Dippers did.
  • The fact that Dipper's Clone Army assaulted him when they realised he wasn't going to follow the plan. Are the clones just inherently aggressive? Or is this a direct result of someone with Dipper's trust issues and neurosis being placed into a closed echo-chamber of identical voices all validating his decisions and his fears? If so, just how unbalanced is Dipper?

Irrational Treasure
  • Blubbs and Durland become surprisingly competent (even if they're still VERY dense), giving our heroes the fear that the people they trust to protect them can turn on them the moment they least expect them to.
  • For that matter, the fact that the whole town can be controlled by a horrible family and there are no limits to what the police can do to uncooperative citizens.

The Time Traveler's Pig
  • The way time travel apparently works. The twins press the backwards-button, and everything reverses: Waddles, who ran away in fear, is pushed backwards again, Soos gets an unsettled look when he stops eating his sandwich as if he's aware of something strange happening, the ball flies back into the mans hand, and all while eerie, reversed music plays.
  • The Time Baby, a huge baby with a large head and red eyes that seemingly controls all of time.
  • Even though it's Played for Laughs and parodied, the idea of actually time-traveling to the end of all time, where nothing exists anymore but you, is actually kind of unsettling.

Fight Fighters

Little Dipper
  • Gideon returns to thwart the Pines family to come after the Mystery Shack. He really loses his grip and has some pretty Yandere tendencies and Nightmare Faces.
    • The way he screams at his parents, demands his father look him in the eye and grabs him by the face, etc., are all strongly reminiscent of a habitually abusive parent lashing out at a child rather than simply an outrageously bratty kid acting out.
    • Speaking of his mom, we see that she's very neurotic and dead-set on just vacuuming all the time. Did Gideon drive her up the wall?
    • Then he decides to shrink Stan...
    Gideon: Heh heh heh... Hahahahah! WHAT AM I DOIN'!? I don't need ransom! I have this! I'll just shrink Stan and take the Shack by force! And if the rest of you get in my way... (Rips heads off Pines family figurines) SMASH!
    • And this kid's only ten years old. What will he be capable of when he's an adult?

Summerween
  • The Summerween Trickster is a monster who tasks Dipper and Mabel to bring him candy, or he'll eat them. He's scary enough at first, but his transformed state is even scarier.
    • To demonstrate his seriousness, the Trickster grabbed a random kid and just ate him whole, in the first five minutes of the episode.
    • The Trickster's actual face and his overall true appearance looks like Noh-Face.
  • Stan's attempts to scare the two Trick-or-Treaters are kind of scary, even if the kids don't think so. His first attempt is to wear a mask that makes it look like his face is melting off his skull.
  • Gorney as he's being eaten alive.
    Gorney: REMEMBER ME!
  • "Knock knock..."
Boss Mabel
  • Dipper caused a couple to go insane by having them look into the Gremloblin's eyes. They're last seen carried away on stretchers in catatonic states, with their eyes wide in frozen terror.

Bottomless Pit!
  • Stan's little speech about life in "Truth Ache".
  • The cowboy skull in "Soos's Really Great Pinball Story" can be both funny and terrifying. Such as when he uses his Vacuum Mouth to suck in Dipper and Mabel to who knows where.

The Deep End
  • The dead, mummified looking merman seen in episode 1 becomes extremely unsettling now that the twins have learned merfolk are real, intelligent beings.
    • Most likely it's intended to be a reference to the Fiji Mermaids, a common carnival attraction about a century ago. Mind you, they were nightmare fuel in their own right, and usually consisted of a mummified ape sown together with a fish. Of course, the one shown in this episode IS human sized... and could be a fake considering this is Grunkle Stan we are talking about...
  • The kid in the pool filter is Played for Laughs, but to keep a kid stuck in there all year is just needlessly cruel.

Carpet Diem
  • Soos's body is switched with Waddles, and while he's being hunted by Old Man McGucket, Waddles is off screen. Whatever he was doing, it resulted in a marriage proposal with a woman being so unbalanced that a mute, bumbling man with no indication of sapience can go from total stranger to marriage material in the space of a few hours — and when he does start behaving like a human being, she's no longer interested.
    • Some of the expressions that Waddles makes in Soos's body is pretty creepy. At one point, he puts his whole hand over Stan's face and just...stares, understandably freaking him out.
    • When Soos tells McGucket that he's a man trapped in a pig's body, McGucket replies: "That's what they all say..." in a very unnerving manner, suggesting he's eaten other talking animals. Of course this is Mc Gucket we are talking about. He may have hallucinated that they were speaking. Still creepy but in a different way...
    • McGucket telling Soos he'll still eat him in his human body.

Boyz Crazy
  • The producer of Sev'ral Timez genetically engineered the band and keeps them locked in an oversized hamster cage, like lab rats.
  • The clones were kept in test tubes. There was an adult, an older kid, a younger kid, a baby... and a fetus.
  • Robbie brainwashing Wendy with his song. The backmasked message itself it pretty damn creepy, too:
    Low Voice: You are now under my control. Your mind is mine.
    • Plenty of scare chords related to that above message.
    • The shit-eating grin Robbie has on his face before he brainwashes Wendy with his song. He knows damn well that what he's doing is despicable and disgusting.
  • Sev'ral Timez is released as babes in the woods. Candy says casually, "They won't last a week."

The Land Before Swine
  • When our heroes come across the pterodactyl's nest, several skeletons are seen nearby.
  • As the gang runs from the pterosaur, they pass a T. Rex stuck in amber that wriggles its arms, suggesting that it might free itself someday. And earlier, they see a trapped dromaeosaurid wiggling its free finger.
  • Old Man McGucket getting swallowed alive by the baby pterodactyl, and implied to have eaten his way out of it at the end.
  • There's also the general fear of having a beloved pet being snatched away by a predator.

Dreamscaperers
  • Gideon wants the shack so badly that he summoned a demon to do the job for him. And he summons him with backmasked words, while his eyes glow and the scenery turns greyscale. While the words being said is literally just "Backwards message", the scene is still pretty creepy.
  • The page in Dipper's journal for Bill's entry is bloodstained, and the author's note warns not to EVER summon Bill. Out of all the horrible things that haunt Gravity Falls, this being scared the author the most. It's entirely possible Bill is the "Him" the author speaks about in the first episode that is watching him.
    • Not the mention the fact that the page of the Journal 2 describing him says that he's appeared in the author's dreams every night for weeks, and the page before his entry in Journal 3 says "Can't sleep can't sleep can't sleep" leading to some interesting implications.
    • The (real-life) third journal also gives us the reason why the page is bloodstained - Ford's prolonged bouts of letting Bill possess his body started causing his eyes to bleed.
  • Mabel losing her cuteness and temporarily becomes Gonk, isn't a pretty sight.
  • Dipper getting a hole blown through his body.
  • Bill Cipher, the most deranged and scariest being in the entire show.
    • He knows lots of things... LOOOOOOOTS OF THINGS
    • Remember how Gideon was once angry enough to try to cut out Dipper's tongue with lamb shears? Bill tears out the teeth of a deer and hands them to Gideon, who shrieks in horror and drops them all.
      Bill: Deer teeth! For you, kid. Ahahahaha!
      Gideon: Ah- ahhhh! You're insane!
      Bill: Sure I am, what's your point?
    • Bill when he gets angry.
      Bill: EAT NIGHTMARES!
    • Bill leaving was incredibly creepy as well, complete with flickering and flashing imagery, and a healthy serving of scary sounds.
    • While he was leaving, his last words were "I'LL BE WATCHING YOU..."
    • Hell, just the fact that Bill wasn't actually defeated, he decided to just leave, because he thought the Pines were amusing and worth keeping an eye on.
  • The Stinger is the icing on the creepy cake. It's a view of a forest scene with "To Be Continued" written at the bottom, with an eerie remix of the theme song playing in the background.
  • Before the episode even aired, Bill was a source of unnerving content. On Disney's website for Gravity Falls, the game "Rumble's Revenge" yields twelve special cryptograms. When transcribed, they read:
    "i bet you're wondering who I aM."
    "i don't give up answers easilY.."
    "i kNow things. Fascinating things..."
    "your reality is a game to me. And I like gAmes...."
    "mischief is my Middle name, but not my first....."
    "thEre are six hints I will give you......"
    "1. there is a secret socIety in Gravity Falls......."
    "2. the Handyman knowS more than he thinks........"
    "3. gideon has Been searching for something........."
    "4. what goes up Is sure to come down.........."
    "5. dipper is pLaying with fire..........."
    "6. i will be returning to Gravity FalLs............"

Gideon Rises

    Season 2 

Scary-oke
  • This episode has a zombie invasion, and poor Soos gets infected and becomes a zombie. Although it's made less scary since he's still as goofy as he normally is.
    • Soos still being a goof makes it even more unsettling since he's as obsessed with eating Dipper and Mabel's brains as the other zombies are.
  • The glove Stan puts on in the bunker has six fingers.
    • Which may be foreshadowing to The Stinger at the end of "Not What He Seems," because the Author/Stan's brother Ford has six fingers.
  • The black light reveals that there was blood on the journal's cover.

Into the Bunker
  • The Shapeshifter, which does exactly what its name implies. It tricks Dipper into thinking he's met the author of the journals, before revealing its terrifying, somewhat eldritch true form and trying to kill Dipper and take the journal. Dipper even discusses the fact that if it got loose, it could turn into anyone and you would never know it. What makes it worse is that it is actually malevolent, unlike the other creatures which are usually True Neutral. The Shapeshifter is a horrifying monster who taunts Dipper about what may happen to him if he goes too deep, transforming into a horrified Dipper before he is frozen in a chamber. Soos even lampshades it with a "Good luck sleeping tonight!" All of this is a pretty good reason why one of its most terrifying forms is the page image!
    Shapeshifter: (In Mabel's form) Should I be one, (takes Dipper's form) or the other? How about both? (transforms into an BodyHorror mixture of the two)
    • The buildup to the creature's reveal was well done and very creepy. Dipper and Wendy, separated from Soos and Mabel, apparently run into "author of the journals". Everything's going fine, Dipper is happy they managed to find him and everything seems to be going okay. Then Wendy realizes that the man they're talking to is the Mascot on the can of beans down in the bunker. Realizing how bad this is, Dipper tries to head out. And then the Shape Shifter takes quite a lot of notes from another certain shape shifting alien....
    • One of the worst parts about the Shapeshifter? He makes the exact same sound effect as the Zurg-a-Tronic Megaray, the source of many kids from the 90s nightmares.
    • The overall similarities to The Thing also add a lot of Fridge Horror. Wendy's bleeding after the initial fight with the monster...
    • A closer look at its transformations.
    • Its last words.
    You think you're so clever, don't you Dipper? But you have no idea what you're up against. You will never find the author, and if you keep digging, you'll meet a fate worse than you can imagine, and this will be the last form you'll ever take! (As the shapeshifter is frozen it takes the form of a screaming and terrified Dipper.)
  • Whatever that monster in the shadows was. It appears to be a spider, but we never actually see it in full form. It's also mentioned to have regenerative properties... This is assuming, of course that the monster wasn't Experiment 210 and the "author's" battle with it wasn't some sort of ruse to gain Dipper and Wendy's trust, such as shapeshifting part of itself into the "author" and ripping out the monster's tongue.

The Golf War
  • The Lilliputtians tie up Pacifica because they think Mabel would like them best if they murdered her. Then, when they all decide to work together they plan to cut Mabel open.
  • There is a bit of existential horror at the thought that Big Henry, an obviously beloved and valued member of his community, not only dies on screen, but dies for a sticker- one that they didn't even win. And on top of that, no one outside his tiny community will ever even know he existed.

Sock Opera
  • Bill Cipher's back. And true to his word, he has been watching the twins, and returns in this episode while being even creepier.
    • Dipper's trying to find out how to crack the laptop's code, and wishes for some clue or hint. Then the full moon rolls over, and it's revealed to be Bill's eye.
    • "I've been keeping an-" *Bill briefly turns massive, red, and Satanically deep-voiced* "EYE ON YOU since then..."
    • When Bill shows up to taunt Dipper, he conjures up an eternally screaming head for no reason other than to frighten Dipper. Then he snaps his fingers and the head unravels, stripping away hair and skin, then flesh and eyes, and finally pulling the skull out of frame. The head is, of course, screaming the entire time. And its tongue ties itself in a knot as it unravels.
    • Dipper tries to make a deal with Bill to get some information out of a laptop, but Bill ends up double crossing him and possesses Dipper's body. While it's quickly Played for Laughs as Bill gets used to a physical body, but the music that starts playing combined with Dipper's screaming combined with Bipper slowly climbing to his feet as all the lighting goes red is pretty terrifying.
    • Bill!Dipper, or Bipper, is both hilarious and terrifying. Bill enjoys causing Dipper's body pain way too much and his expressions when threatening Mabel are cruel in ways Dipper's face should never get.
    • Bipper wears a wicked grin on his face, half Cheshire Cat Grin, half Slasher Smile, and it's exceptionally creepy to look at. The animators made his face more frightening than it should be, as in close-up, you see actual individual teeth and gums, which rotate with the angle of the head and everything, as opposed to the usual nondescript white bar you usually see in characters' mouths. It makes him look more than a little disconcerting.
    • Seeing him dressed as a reverend makes for an incredible contrast; coupled with the dark clothes, unnatural eyes, and a Slasher Smile, it makes him look especially sinister.
      • Word of God says that his mannerisms and reverend costume were based on two sources, Reverend Henry Kane of the Poltergeist film series and Reverend Harry Powell from The Night of the Hunter. That's right, an eldritch cult leader and a serial killer who threatens children.
    • Our heroes were lucky that A, Dipper was still able to possess a sock puppet to communicate, and B, Dipper's physical body was worn out. The thought of Bill, this total sociopath, running around in the real world, is not a pleasant one.
    • His fantastic Nightmare Face when he asks, "But how can you stop me... if you don't exiiiiist? *echoing laughter*"
    • One unnerving thing is how nobody finds anything strange about how Bipper acts, although Word of God stated that we dont' get to see this because of time restrictions.
    • The sheer amount of body horror. Bill inhabits and damages Dipper's body, while Dipper watches helplessly. There's nothing he can do.
    "Race you down the stairs!" [falls down steps]
    "Boy, these arms are durable!" [slamming arm repeatedly in drawer. When he removes it it's stuck full of forks.]
    • Even the episode's code, once translated, makes an incredibly creepy poem. Just what the hell is Bill planning?
    NO PUPPET STRINGS CAN HOLD ME DOWN
    SO PATIENTLY I WATCH THIS TOWN
    ABNORMAL SOON WILL BE THE NORM
    ENJOY THE CALM BEFORE THE STORM
  • This one is subtle. Observe the room right before Bill appears. After the flash, very faintly there's a rubics cube in the corner. It was not there before. Later episodes have shown a rubics cube in Dipper's possession.
  • Here's another one; the phrase Bill says before taking Dipper's body ("Eenie meanie miney... YOU!")? It's the exact same one Grunkle Stan used in the first episode.
  • The release of the third journal reveals that, had he succeeded in his plan, Bill was going to throw Dipper's body from the water tower so that everyone would think he'd committed suicide. And probably do the same to Mabel afterward...though the passage could also be read as him just anticipating she'd do it naturally to be with her brother, which is hardly better. Even for a creature that delights in causing chaos and pain, it's a sickening new low.

Soos and the Real Girl
  • The animatronics at the Suck E. Cheese's knockoff restaurant were pretty creepy to look at even before they were taken over. It doesn't help that one of them looks disturbingly like Mabel's puppet Bear-O.
    • On a similar note, some of the things that they have built into them don't really make a whole lot of sense, like the clawed hands on the Barrel Rat Robots. Considering that they looked like they were all endoskeleton they obviously weren't meant to be seen, making one wonder why they were even put on to begin with.
    • While it is a complete coincidence, as the episode was finished long before the game came out, the animatronics have reminded many of the indie horror game Five Nights at Freddy's, which also had killer animatronics.
  • The episode centers around Soos coming across Giffany, a Yandere in a dating sim that ends up possessing the aforementioned animatronics to get Soos and delete Dipper, Mabel, and Melody.
    • She has a split second Nightmare Face seen here when she's going full Yandere, and even resembles a face that the Yandere queen herself, Yuno Gasai would pull.
    • The camera cuts away from Soos playing on the dating sim... only to reveal that his computer is unplugged.
    • It's revealed that Giffany killed her creators, and they show that she electrocuted anyone who tried to destroy her.
    • Giffany herself has an unsettling and shaky pixelated art style that clashes with everyone else on the show, especially when she starts showing off her Contagious A.I. powers and combined with her Accent On The Wrong Syllable voice. Worse, apart from her brief screaming fit when she realized Soos was putting her up for a while, she never loses that cheerful, polite tone.
    • Her death is also nothing to sneeze at, complete with a horrifying scream while the robot she was possessing melts.
      • Worse than that, we actually see Giffany get deleted before the scream. So who's screaming? Well, the other robots she controls maintain personalities and sentience of their own... so it's very likely that the beaver robot she was possessing woke up just in time to horrifically die.
    • The episode can hit a little too close to home if you've ever been in an abusive relationship. Giffany's speech to Soos, that real women will only judge and insult him and that staying with her is the only way to prevent being alone, sounds too uncomfortably like what an abuser would say to their victim to get them to stay.
    • Game companies needed to produce many, many copies of a game to recoup the expenses in creating a game in the days before direct download. How many other players are dead, trapped in the game, or forever under Giffany's digital thumb? And what happened to the three people who owned the game before Soos?
      • We're told that they returned the game to the store, which implies that they freaked out before Giffany had the chance to get into the serious assault phase. So it's possible that Romance Academy 7 failed miserably as far as sales went, and Soos is the only one unlucky enough to have Giffany around long enough for her to build up to "YOU WILL NEVER LEAVE ME". Still a disturbing prospect, though.
    • This episode is frightening because unlike Rumble McSkirmish, Giffany thinks. She's not locked into a set of rules like Rumble is. She's a living, thinking entity capable of complex planning and emotional manipulation. Move past her screaming match when Soos says he's leaving her to the end of the episode; she goes right back to being her charming self, gleefully describing to Soos how no real woman would ever be with him, but how she's always predictable no matter what. You can tell by the look on Soos' face that Giffany knew exactly where to hit, and that, even for a brief second, Soos really considered giving his mind to Giffany.
    • As if to prove a point how different Giffany and Rumble are, she rather casually vaporizes him in passing when her programming moves through his game.
  • Take a closer look at the dumpsters when Stan is being attacked by the badger robot. One has Robbie's "explosion" painted on it, but the second has a much more sinister symbol.
  • Goldie, an old coin-operated machine in the Mystery Shack that malfunctions and spews oil from its face while screaming, terrifies a poor unfortunate little boy to tears.
    Wendy: It's time to throw that thing out. Its face reminds everybody of the inevitability of death.
  • That random woman that Soos accidentally bumped into is unnecessarily creepy, even if it was also funny at how absurd the scene was.
    You can't undo who you are.
  • Giffany brings all the animatronics to life... including the one Stan was stealing. The way Will E. repeats his Catchphrase right before attacking Stan was especially creepy.

Little Gift Shop of Horrors
  • An unnamed person is greeted into the Mystery Shack late at night. After Stan tells three different stories about some of the items he's selling, the person decides not to buy anything. Then, Stan gives them a "potion" that knocks them out. They wake up in the shack the day after, trapped in a case and apparently glued to the stand, being shown off as an exhibit called "The Cheapskate".
    • Made worse by Stan's continued creepy smile as the person's vision blurs and they fall over.
      "You shoulda bought something while you had the chance..."
    • Then, Mabel and Dipper see the person in there and don't seem to care at all. There's a thin line between Rule of Funny and Rule of Scary. At the least, this episode is hinted at to be non-canon.
  • One of the items Stan talks about is this some... blob creature... with an unnatural appearance and high amount of eyes and other orifices.
  • The swarm of disembodied hands in the Hand Witch story.
  • If you're scared of stop-motion/claymation, like Mabel is, then seeing the claymation monsters won't be a nice sight. Worse yet, is Mabel's creation: Shimmery Twinkleheart, somehow even more terrifying when rendered in claymation than in regular animation.
  • Somehow, Soos still ended up turning into a clay creature, resembling Gumby. Despite doing nothing dangerous and just being creepy-looking, Stan ends up decapitating him. Even worse, Soos didn't appear again after the segment, which can give creepy implications. Be thankful it's non-canon in the same vein as Treehouse of Horror.

Society of the Blind Eye
  • This episode features a secret society that has been erasing the memories of people in Gravity Falls, making them blissfully unaware and ignorant to the horrors and mysteries of the town.
    • To take it a bit further, it seems that various people of Gravity Falls suffer a bit of brain damage because of it.
    • Lazy Susan is seen on a payphone trying to call for help, when she's suddenly abducted by two members of the society, then they tie her down and erase her memory.
    • The scene where the main characters get to watch McGucket's memories is really unnerving, as it shows his descent into insanity, leading up for him to be the crazy old coot that we know him as now.
    • The credits scene shows Grunkle Stan, and he's working on his mysterious machine. A portal is open, sucking some things in, even a pipe which manages to hit Stan's hand (and we even get to see blood as he patches it up). Then there's some cryptic possible Foreshadowing as he says that no matter how dangerous this is or how long it takes, he will pull something off and no one will get in his way... right as the camera focuses in on a picture of Dipper and Mabel.
    • The first video journal of McGucket's shows that something he worked on becomes more and more unstable as time passes. And at the very end, Stan comments that the portal is "growing stronger every day." The video diaries also reveal that McGucket worked on the portal with the author of the journals. This is a disturbing example of how erasing your memory many times due to denial can lead to complete and utter insanity.

Blendin's Game
  • While a tame episode overall, it was not above showing the loser of a gladiator tournament screaming in agony as his body is disintegrated.
  • During the time travel segment, the Gleefuls can be seen walking by in the past, looking like a perfectly normal family... but there's also an advertisement that shows Bud having a 'just had a baby' sale. But someone drew on the advertisement, referring to Gideon as a 'demon' while drawing horns on him.
    • Beyond painful Foreshadowing, it just raises the question... What the hell happened? How did everything go so wrong...?
  • Blendin was going to Ret Gone Dipper and Mabel out of existence if he won.

The Love God
  • This episode is pretty light hearted, although it does place this show in rather stark perspective to realize that an episode that begins with an angst-ridden teenage boy moaning at the bottom of an open grave could be considered comic relief. Or that said comic relief includes a pair of cheerful undertakers who place plates of cookies on top of occupied glass caskets.
    • There's also Robbie's parents giggling as they exclaim that they hope nobody died in the balloon crash. Sure you do, your dread of the extra business is written all over your faces.
    • That open grave scene? It features the Mystery Shack kids encouraging Thompson to look inside by chanting "Gaze upon death! Gaze upon death!"
  • It's subtle, but the model of the town Mabel makes while trying to find a date for Robbie has a slightly unsettling resemblance to the one seen in Li'l Gideon's bedroom in "The Hand that Rocks the Mabel".
  • That horrible, HORRIBLE balloon created by Stan. It's deliberately over the top and darkly hilarious, but it just looks... wrong.
    • His original blueprints are also pretty creepy. And let's not forget a mother and child's reaction to the balloon heading toward them:
    Kid: Mommy, is the floating head going to eat us?
    Mother: Yes he will Charlie, yes he will!
  • Robbie has a picture of Dipper on a dartboard. This isn't too weird, we've seen Bud Gleeful with a picture of Stan on a dartboard, the same with Pacifica Northwest and Mabel's picture. But Robbie's dartboard is filled with knives and shurikens, and there's writing next to it reading DIE DIPPER DIE. It's quite unsettling, especially when you consider their age difference...

Northwest Mansion Mystery
  • The Lumberjack Ghost. He's got a big, menacing, and terrifying design, including an axe sticking out of his head.
    • To herald his arrival to Dipper and Pacifica he had the mounted animal heads bleeding out of their mouths and eyes as they ominously chant, "Ancient sins... Ancient sins..."
    • When all the taxidermied animals come to life during the party, we get lovely sights such as the front half of a deer dragging itself forward and a goat stiffly flailing on its side, as well as various animals attacking people while bound to pieces of wood.
    • After escaping from the mirror, he starts turning people into wood! And as if that weren't over the top enough, the final act of his rampage was to set the house on fire with all of the people turned wooden statues in it!
    • While everyone turning into wood by the Lumberjack Ghost was horrifying enough, we get a rather disturbing Call Back. When Dipper was turned into wood, his position and scream mirrors exactly how the Shapeshifter froze after transforming into him from Into The Bunker. What's even worse is that might not even be "his fate".
    • The fact that the Northwest parents and their butler were gonna let the ghost rampage and burn everyone else. Also, while it's more of dark comedy due to the delivery of the line, the fact that Preston was seriously planning on eating the butler once food ran out is still disturbing and just further shows what a depraved man he is.
    • The ghost's backstory. Did anyone expect to see that axe go flying at his head?
  • There's some disaster that's coming in 21 hours, and a terrifying tapestry hints that Bill may be behind it!
    • Said tapestry seemingly depicting people worshiping Bill while being consumed alive by flames!
    • Worse, on his AMA, Bill revealed that the tapestry is a PROPHECY.
  • We see why Pacifica is the way she is: her father is treating her like a dog and has her at his beck and call with the ring of a bell. Considering how scared she was of tracking mud on the carpet and how scared she is of her parents in general, they must have left some pretty deep scars on her.
  • The Page Cryptogram at the end reads STANISNOTWHATHESEEMS STANISNOTWHATHESEEMS STANISNOTWHATHESEEMS! Now what is the name of the next episode? Not What He Seems. Oh Crap!!

Not What He Seems
  • We finally find out the "truth" behind Grunkle Stan: he's been dead for thirty years. The Stan that the twins have been living with all summer, the Stan that we've grown to know and love, might be an imposter. This is somewhat mitigated by the fact the following episode revealed that Stan faked his death in order to impersonate his brother.
  • If Mabel had been wrong, the universe would have been destroyed.
    • Highlighted by Dipper saying, "Are you insane?! We're going to d-". That is a huge Adult Fear that you're facing your mortality and your sibling sealed the deal.
    • The Broken Aesop set up by this is terrifying. The Power of Trust is a beautiful thing, kids, so it's okay to put trust in a felon who has lied to you for as long as you knew them, impersonated someone who (apparently) died a highly suspicious way, and is currently enacting plans that, as far as you know, may harm or kill others, because they really aren't as bad as they seem.
      • Thinking about the episode in that light, this does double-duty as Adult Fear as well, and is a pretty untimely message considering the currently problem the US has with people ignoring warning signs in dangerous individuals, often leading to tragedy. Talk about a "Do as I say, not as I do" aesop.
    • Made worse by the fact that, apparently, she was wrong. She was right about Stan not intending to destroy the Universe, but even his brother is disturbed by the fact that he actually opened the portal. He asks whether Stan read the warnings, and Stan responds that he did but decided to go through with it anyway. The portal apparently is capable of enormous destruction. Mabel was just very lucky.
  • The moment where Stan's machine starts activating. The sky goes red, gravity begins to distort, and it appears that the very fabric of reality is tearing itself apart. Though it actually didn't cause the apocalypse, it sure as hell looked like it was!
  • The scene when the countdown reaches zero, gives us a closeup of Dipper, Mabel, Stan and Soos being engulfed by the machine's energy, making it look like they were vaporized.
  • A bit mundane compared to the rest of the episode, but Mabel's escape plan was seriously risky. If the humvee had crashed in any other way, they might not have been able to walk away like they did.
  • The Author has been trapped in a dimension where he hasn't aged for thirty years from Earth time. Think on that.
    • He actually has aged, as he looks far older than he did when he was thrown into the portal. He just looks younger than Stanley.
    • Also, the Author is shown to have gotten on Bill's bad side before, and the Author has just returned as well as being revealed to be Stan's brother. If Bill wasn't angry with the Pines already...

A Tale of Two Stans
  • An accidental screwup made in a fit of frustration gets a still-underaged and still in high school Stanley completely disowned by his entire family and thrown out to live in his car with no money and a single bag of clothes. A frighteningly realistic nightmare for a lot of teenagers.
  • Remember Stan's tattoo? The one he claimed didn't exist despite the obvious evidence to the contrary? Well, as it turns out, he actually isn't lying, because that isn't a tattoo- It's a scar. A scar from a hot metal brand. And during the flashback to the night his brother disappeared, they actually show him getting it- during a fight with Stanford over Journal 1, Stan claimed Ford left him behind and ruined his life. Ford, in retaliation, pushed Stan onto the side of one of the portal's controls- where the mark was - accidentally in the struggle for the Journal, all the while claiming that Stan ruined his own life. You can hear Stan's scream and see his shoulder steaming from the heat. It's incredibly painful to watch.
    • The whole fight is pretty scary at the end. Stan and Ford are pounding away at each other, taking out their pent-up anger over perceived betrayals. Then, Ford knocks Stan into the hot computers, burning him. The look on Ford's face is one of a man who's realized he's gone too far. And when Stan retaliates, Ford is sucked into the Portal; Stan's expression is that of confusion and fear, as his brother is pulled into the weird thing he didn't understand. All he can do is watch as his brother is taken away from him. The last thing Stan hears before Ford vanishes? "Stanley! Do something! Help me! Stanley!!"
  • Seeing Stan and Ford going from close-knit brothers as children, to borderline hating each other and coming to blows in their adulthood is quite shocking to see, and frightening in its own way.
  • When Stanford and McGucket were first testing out the portal, McGucket was partially sucked in. Although he was completely unharmed, whatever he saw on the other side (from a recent convention, Alex claims he saw "the kinds of places Bill likes to hang out'', and McGucket's mind wasn't as prepared for such surreal things and strangeness as Ford's was, as Ford had been preparing himself for quite some time) appeared to traumatize him, causing him to quit the project. Stanford then shouts after him, only to be answered by incoherent whispers, which led him to think he was going insane.
    • Subsequently, whatever happened between McGucket quitting the project and Stanley arriving at Stanford's house. It apparently caused Stanford to undergo Sanity Slippage and turned him very paranoid, to the point where Stanley is the only person he still trusts. In fact, it's likely that it was during this period of time where he encountered Bill Cipher.
    • He's particularly suspicious that something wants to steal his eyes. Just the paranoia talking, or did he really run into something that tried to do it?
      • In The Last Mabelcorn, it's revealed that Bill Cipher plans to create a bridge between the living world and the Nightmare Realm, so it might have been that McGucket had seen what humans brush off as "just a bad dream." And it turns out they aren't just real, but coming for the human race. That's enough to traumatize anybody.

Dungeons, Dungeons, and More Dungeons
  • The creature that Ford wanted to contain before it could eat human flesh ended up eating some flesh off of his face later. This does not spell good things...
  • Stan's attempt at a fan sculpture of Ducktective, made of spare taxidermy parts. Complete with artwork that's a bit more detailed than usual to send it straight into the Uncanny Valley.
  • There's quite a lot of Body Horror in this episode. First, we have the Cycloptopus, whose eyeball is also its mouth. Then there's the centaurtaur, which is a centaur with an upside down horse's body where its torso should be. And then there's the Impossibeast, which is a creature that's practically MADE of Body Horror.
    • Of course, the centaurtaur (a creation of Mabel's unique imagination) is also made into a combination crowning moment of funny and crowning moment of heartwarming by Stan's comment:
    Stan: Mabel, I am so confused and so proud right now.

The Stanchurian Candidate
  • Gideon is back, and while well over the Moral Event Horizon still manages to be completely despicable. His most heinous action is mind controlling his own father and using him to win the election. This kid is all kinds of fucked up.
    • And as of the end of the episode, it looks like Bill will be making his return very shortly...
  • The twins themselves crossed straight into Creepy Child territory with how quickly they took to and delighted in mind controlling their own family members. Posted reactions to this on Tumblr consisted mostly of three words and ended in expletives.
    • In particular, Soos is terrified by the experience, and his reaction isn't portrayed lightly at all.
    • In addition, the fact that Ford not only invented said mind controlling tie, but also turned it over to two children to control his twin brother. And clearly has no compunction about doing so.
      • Ford also nonchalantly revealing that: "A long time ago I designed a prototype for Ronald Reagan's masters." Master's Thesis?
    • Even more horrifying is Gideon complimenting them on becoming just like him, a fact that they do not even acknowledge or deny!
  • The mind control itself is portrayed in quite a creepy manner. When Stan is being controlled his eyes look as if he has been concussed. Gideon's possession of Bud is even worse, he's screaming for his son to stop as his eyes turn white and his son takes hold.
    • With Bud the possession is more seamless, but it is very disconcerting to see a grown man behaving like a sickeningly cute child. Things don't get any better when Gideon abandons any pretense that Bud is acting under his own free will and Bud becomes a zombie.
  • Gideon literally tearing his hair out when he loses.

The Last Mabelcorn
  • The entire episode is rife with nightmare fuel.
    • Just the introductory sequence alone has a dream between Grunkle Stanford and Bill. It goes about as well as you'd expect.
      • The dream ends with a very realistic shot of Stan's hand and eye. It's incredibly unsettling.
    • The later scenes with the unicorns, with the fact that one of the unicorns BLEEDS after Mabel punches it, after learning the whole "pure of heart" thing was a lie.
    • The scene with Grunkle Stanford where it's revealed Standford had been working with Bill in the past to help further his research.
    • The credits scene where Bill Cipher starts looking for someone in Gravity Falls to possess so he can get into the shack. The fact that in The Stanchurian Candidate Li'l Gideon decides to make a deal with Bill Cipher at the end, means it can only go so well.
    • The fact that Bill Cipher's plan is revealed to be bringing the Nightmare Realm into the world of the living is terrifying in and of itself.
      • It gets worse when you think about what this specifically means for Bill. The episode shows that the Real World and Nightmare Realm are linked by the Dreamscape, which is why Bill can interact with others through dreams alone. It requires an unconscious body. What does this mean? It means that all of Bill's powers —his limitless omnipotence, the ability to warp, rewrite and conjure reality in dreams as he sees fit? They're all REAL. Everything, every single thing he has ever done within the Dreamscape, he can actually do. If he gets through that rift, there is no question about it, he will be a godlike force of ultimate power.
      • Even worse is the fact that Ford said that The End of the World as We Know It is all fun and games to Bill.
    • There are other things like Bill lurking in the Nightmare Realm. We don't know what they are yet, but it can't be pretty.
      Bill: Let's just say that when this portal finishes charging up, your dimension is going to learn how to party! 'Isn't that right guys?
    • The scene where Dipper believes Ford is possessed by Bill and Ford backs him into the wall is incredibly tense, and thanks to Scary Shiny Glasses it's easy for the viewer to forget that Ford already said he's immune to being possessed thanks to a metal plate in his head. And if Ford didn't have that metal plate, Dipper would have accidentally wiped his mind with the Blind Eye gun.
  • Speaking of the metal plate, the scene where Ford reveals he has it is not played for laughs. And think about how terrifying Bill really is when a guy is willing to undergo the dangerous procedure of having metal put into his skull.
    • Fridge Horror makes it even worse; it's very heavily implied that he had it implanted in a frantic, last-ditch attempt to keep Bill out of his head. Having metal implanted into your skull is not the kind of operation that should be done in a rushed moment of desperation.
  • At the end, the unicorn hair Mabel got gets used to draw a protective ward around the Mystery Shack, protecting the minds of those within. All solved, right? WRONG. Bill is watching and is already picking out a potential candidate to possess and set his plans in motion... And the worst thing is we never do see who he picks. It could be anybody. We can't even be sure if Soos and Wendy, two people who ''work'' at the Shack but don't ''live'' there, are safe. Even worse, the next episode involves Dipper, Mabel, Stan, Candy, and Grenda going on a road trip, meaning that they'll be out of the Shack...

Roadside Attraction
  • Darlene. Being a spider-person with a knack for deceiving flattery, she's claimed the lives of many men before (Dipper, confused, even questions just how a cheesy roadside museum in the middle of nowhere can promise "fresh mummies daily"), and with her being still alive by the episode's end, she isn't going to stop any time soon.
    • While her human form is unsettling enough in its Nonstandard Character Design — garishly loud makeup, arched eyebrows, over-tanned skin with freckles and premature wrinkles, and a permanent sultry grin — the episode shows in full detail just how she removes her disguise: by wrenching her lips apart, turning her elastic dermal layer inside-out like rubber and stretching it across her body. Stan is rightly terrified.
    • Plus, the fact that she's far outside Gravity Falls, meaning that either the influence of Bill's dimension has a much further reach than we thought, or this kind of thing just exists in our world on its own.
  • The fact that Darlene's mummy museum is a gallery of corpses. Not fake props, not hundreds/thousands-of-years-old people that got preserved naturally: they're all people that were alive until a few weeks/days ago and were killed by what is effectively a Serial Killer.
    • No mention of the lair she brings Stan to? You can see the corpses of her previous victims in the background among the webbing. Yeesh.
  • One thing the animators of this show have shown themselves to be unnervingly good at? Spider movement. Don't like spiders? Several episodes of season 2 will leave you squirming in a corner.
  • By the end of the episode, Darlene is still alive. She is left temporarily trapped, but she does not seem to have sustained any damage and she can still shapeshift. It's only a matter of time before new visitors to the park find her and come to her rescue, and Darlene's gruesome business continues as usual.
  • An easily missed tidbit: Darlene refers to herself as part of a "weird species". If there is a "species" to speak of, that means Darlene is not a singular anomaly - and she never said she was the Last of Her Kind either. How many more spider-creatures like her are out there right now, preying on the unwary?!

Dipper and Mabel vs. The Future
  • A distraught Mabel runs off from the Mystery Shack and into the woods. She meets Blendin Blandin, who talks to her about something... He apparently noticed her plight of wanting things to stay as it is and offers to keep time as it is, if she just gives him the pocket dimension that Ford and Dipper have been trying to protect. She hands it to him, and he drops it on the ground. Blendin was possessed by Bill Cipher and has unleashed the apocalypse on the world, with a dimensional rift showing up and cracking the sky open. The apocalypse has begun.
    • Mabel's so afraid of the future that she offers up the Rift, believing it will stop time and make everything and everyone remain the same in Gravity Falls forever. She may not have intended for it to jumpstart the apocalypse, but her express intention to force everyone to live in the same bit of stopped time forever has some pretty horrifying implications in and of itself, if it had worked!
    • Mabel jumpstarting the apocalypse is enough Nightmare Fuel on its own. A near-thirteen-year old girl's first act as an almost-teenager, after her whole world came crashing down right before her birthday, is to indirectly cause an Apocalypse How by listening to her emotions rather than to reason. This is also the SECOND time Mabel made such a decision! Someone is going to be a bit scarred for life.
    • Added Fridge Horror when Bill possessed Blendin, unlike when he was possessing Dipper, his voice stayed the same. Thus aside from a few suspicious hints, there was no giveaway that he was taken over. Additionally, keeping in mind that Voices Are Mental, it demonstrates just how powerful Bill has become since the beginning of season 2.
  • Blendin taking off his Scary Shiny Glasses to reveal Bill's slitted yellow eyes. (Not even the somewhat rounded, cartoony eyes that Dipper and Ford showed when possessed, but the disturbingly realistic ones with lashes, wrinkles, and lacrimals that Bill often gets when angry or excited.) And Bill bursting out of his chest a moment later.
    • Listen to Bill's voice: it gets even crazier and at times raspy once he pops out of Blendin. Bill has already gone Drunk with Power.
    Bill: At last! At long, long last! The gate between worlds has opened! The event one billion years prophesied has come to pass! The day has come! THE WORLD IS FINALLY MINE!
  • Ford, knowingly or not, is emotionally manipulating Dipper in a very similar way that Bill did to him.
  • Even for a show that is very liberal with horrifying imagery, the credits clip is a new high for them. The end credits show nothing but a close up of a crumpled invite for Dipper and Mabel's party, while the screams of the entire town can be heard in the background, leaving it up to the viewer to imagine the kind of nightmares Bill has just unleashed upon the world. Whatever he is doing, it is living up to the idea of it being The End of the World as We Know It, with sirens blaring in the distance, helicopters flying about presumably trying to rescue people, and all we can do is just imagine it.

Weirdmageddon Part 1
  • This is by far, the scariest episode in the entire show. How about we start with this promo? It looks like something straight out of a Creepypasta, but at least you go into a Creepy Pasta knowing it can be scary. This promo is the equivalent of a Jump Scare: It starts out normally, using the shot of the water tower from the show's opening. Then suddenly, Bill cuts through the promo and says, "For one trillion years, I've been trapped in my own decaying dimension! Physical form? Don't mind if I DO!" While Bill may be prone to using a Voice of the Legion, it is the sudden shift to a higher pitched voice, the maniacal laughter in the background, and the disturbing and glitchy imagery that makes this one of the scariest things to have ever come out of the show. When Bill shows up in the trailer, he is made of flesh and is right up against the camera. The screen glitches into images of Bill on top of backgrounds, like the page with the Cipher wheel depicted in the previous promo (the very same one where Bill's drawing escaped), a black background containing some three dimensional blocks (which is jarring considering the show's two dimensional format), and what looks like Hell, but is most likely the remains of Gravity Falls. Something else to consider is that the Disney XD logos glitch and flash at some point in the promo, which suggests he has invaded our side. Bill, in his terrifying fleshy form, mentions a physical form, which could imply that this is Bill's physical form, unless it was his three dimensional form he was referring to. Finally, this made it on the air. Alex Hirsch presumably approved of this promo too, despite this being the darkest, creepiest, and most terrifying promo yet. Suffice to say, this one promo has shocked and scared many people. And all this in just nine seconds!
  • Bill has entered the physical plane, and has a new three-dimensional form and a whole set of new powers!
  • The title of the episode. It can be deciphered to "Weirdmageddon" using the Vigenere key "BLUEBOOK", but... There is just something alien and eldritch about it, due to how strange and different it is, compared to past episode titles. One has to wonder how to even pronounce it...
  • The episode has a new intro. It's a glitchy, eerie, distorted version of the regular theme, starting with the image of the waterfall vista transformed into a burnt-out wasteland with a river of blood falling into a hole in the sky. It then proceeds to show Gravity Falls, destroyed by Bill, and Bill himself, along with his eldritch buddies, replace the Mystery Shack in the intro, except for one part where you just see the terrified citizens of Gravity Falls. There's a shot of a skeleton wearing Dipper's hat, and the photographs that appear near the end have all the characters in them replaced by Bill. The kicker? The end says "Created by: Bill Cipher", instead of Alex Hirsch.
    • Also, Bill has a mouth. It's just wrong.
    • And, the very last shot of the intro is notably different. Bill's picture was torn out. Bill has escaped.
    • Also, the backwards message. It's not a hint from a random voice as to the code in the credits like normal... it's Bill saying, "I'm watching you, nerds!" Implying Bill knows about us.
  • Preston tries to ally with Bill. What does Bill do? He decides to twist Preston's face into... something... horrible. View at your own risk. More specifically, Bill rearranges the functions of every orifice on his face; his mouth becomes a giant eyeball, his eyeholes become a set of ears, and both his ears become a pair of noses. To make matters worse, his muffled screaming and anguish indicates that this is NOT pleasant at all. Even worse is that he is suggested to have died in the aftermath after collapsing and not being seen after the time skip, meaning that Preston could've suffered the most brutal death shown in a Disney cartoon. One has to wonder how this even got past the censors.
    • It becomes even darker when you realize that his new face doesn't have a mouth (which explains why his screaming is so muffled.) If he can't find a way to reverse it, he's bound to starve to death.
      • Bear in mind that we don't see the ear on the other side of his head, so it could be that his mouth has been moved over there.
  • Ford tries to fire a disintegrating ray at Bill, but misses due to the weirdness seeping into the town startling him and throwing off his aim. Bill seizes Ford quickly, and offers to let Ford join his freakish group. Ford refuses, so, what does Bill do? Trap him in gold to use as a backscratcher-and when Bill sees Dipper has the journals, he burns all three of them, all the while claiming Dipper "shouldn't be a hero", uses Ford as an example of what happens to "heroes" in his world, and that Dipper's "not so much of a threat now'' without them.
    • Backing up a bit, Ford may have missed Bill's body but what did he hit instead? His hat which, instead of puncturing a hole cleanly through cloth, graphically shows exposed flesh and bone. This means Bill's hat, his bowtie, and possibly his cane aren't just accessories: they're part of his body.
    • The journals wouldn't have helped anyway. The last we saw of them was the blacklight message on Bill's page. "IF HE GAINS PHYSICAL FORM ALL IS LOST!"
    • Then, when Dipper tries going up against Bill, Bill suddenly grows in size to intimidate Dipper.
    Bill: "Well, isn't... this... INTERESTING?!?!"
  • Bill incinerates Time Baby without breaking a sweat.
  • During the chase scene where Dipper and Wendy are fleeing from Gideon and his men, the giant head with an arm growing out of it catches one of the convicts' cars and shoves it in his mouth. And then begins eating it, with the driver still inside.
  • When Gompers destroys the prison walls, allowing Gideon and his prison mates to escape, you notice the art teacher was crushed to death by falling debris.
  • Dipper was alone for three days in constant danger from monsters before he found Wendy. Imagine something like that happening to you, or someone you care about. And Dipper is still a kid.
  • The ending cryptogram is (by now) standard creepy gloating from Bill, but its last line? Now let's see which Pines survives.

Weirdmageddon 2: Escape From Reality
  • The episode starts with a cute little squirrel going about it's business- and then the mailbox shoots out its prehensile tongue and EATS IT. Welcome to Day 4 of Weirdmageddon folks!
  • The creature with 88 different faces. Talk about Body Horror.
  • Bill's "throne..." Which is made of frozen humans. It's left ambiguous as to whether they're conscious. Even Bill doesn't know.
  • What is Phase 2 of Bill's master plan? Weirdmageddon goes global with his friends helping out to spread chaos in his conquest.
    • Though it fortunately turns out they cannot leave Gravity Falls thanks to a protective field, Bill is furious about it and says "Maybe someone needs to come out of retirement..." in a tone that bodes ill for Ford.
    • Although it can come across as Nightmare Retardant if you thought it was already that way.
  • Bill's joy and pride when he hears Dipper, Soos and Wendy are in Mabel's bubble. He is confident they will never leave what he describes as his most diabolical trap ever, claiming "You'd need a willpower of TITANIUM to resist its temptations!"
  • After Bill finds out that Gideon let the Pines escape into the bubble, he simply tells Keyhole to fetch Gideon for him. We never see what happens to Gideon, but knowing Bill, Gideon can be in for a world of pain, despite Bill gleefully celebrating Dipper and co. being trapped in what Bill considers to be the perfect inescapable prison.
  • Dipper, Soos, and Wendy enter the huge bubble that Mabel is trapped in. At one point, Wendy talks to Dipper... She tempts him in staying in the bubble so he can be aged up and date her. Dipper realizes this is a trick, and then Wendy disintegrates into a bunch of cockroaches. The environment turns dark, just as it was outside the bubble, and the stuffed animal tree and all of the stuffed animals horrifyingly become dark as well, all with one eye just like Bill, saying that Dipper's being watched and that he should stop trying to get everyone to escape the bubble. And then it all just snaps back to normal like nothing even happened!
    Stuffed Animal Tree: You shouldn't have done that, DIPPERRRRRRRRRR! We're watching you...
    Stuffed Animals: THERE ARE EYES EVERYWHERE...
  • Bill's bubble is 50% Gilded Cage, 50% Lotus-Eater Machine. It gives those within whatever they want, from allowing Wendy to trash the school with her friends to giving Soos his Disappeared Dad and offering Dipper a chance to be with Wendy. (See above) And it almost works. Two characters are ensnared almost immediately by "Mabelland", and if Dipper hadn't realized his irresistible offer wasn't real, they would have all just sat around in the bubble with Mabel while Bill conquered the world.
  • How willing Mabel was to stay in the bubble. She herself admits that she didn't actually make Mabelland or the rules but just "woke up there". While she was hanging out in her glittery false paradise with Zyler and Kraz, her entire family and her friends could have died and she'd never know.
  • The backwards message in the end of the theme song has changed into "I'M WATCHING YOU!" said in a more threatening tone than Bill's initial "I'm watching you nerds!"
  • "Don't worry; they're not conscious any more. Probably."
  • Dippy Fresh, funny and stupid on the outside, horrifying when you think about it: Mabel was perfectly content with throwing her brother away and replacing him with someone... better. The fact that SHE made him makes it all the more creepy, and she wasn't even hypnotized, she just went crazy with power. Mabel can be a creepy little girl.
    • She was somewhat hypnotized, as once the illusion begins to break she complains about the brightness and how the same song plays, which is pretty scary on its own. Delves more into Tear Jerker territory upon realizing that the creation of Dippy Fresh was more likely a way for Mabel to cope with Dipper's rejection of her.
  • Bill's lovely little temper tantrum when he realizes he can't leave Gravity Falls due to a mysterious Force Field. And the fact that he almost certainly isn't going to nicely ask Ford to help him get out and wreak havoc on the rest of the world. Though considering Bill already turned him into a backscratcher just because, whatever Bill does is probably going to be incredibly unpleasant at best and at worst... do we really even know?
  • The fact that Dippy Fresh, rather than being disintegrated in the bubble like everything else, was originally going to be directly murdered via Neck Snap... by Dipper. Not to mention the line that's said by said character—doesn't it sound much more like something that Bill would say?
    Dippy Fresh: Your hat's on backwards.
    Dipper: Your head's on backwards! (snaps Dippy Fresh's neck backwards, killing him)

Weirdmageddon 3: Take Back The Falls
  • Near the start of the episode there are some quick shots of the characters sheltering in the Mystery Shack. Three of them - the woodpecker's husband, a unicorn, and a gnome - are partially turned to stone. The woodpecker's husband just has a stone woodpecker and a patch on his shoulder, he's clearly still able to move, part of the unicorn's neck and most of its face is stone so maybe it can't eat, and the gnome is all stone but for a waving arm. Assuming stone people aren't aware that's rather worse than being changed completely. If it was the eye bats hitting at a wrong angle they must have been rescued before the job could be finished. Or are they turning back to flesh like Lazy Susan, but more slowly?
  • A minor example, but Ford tries taking a seat in the penthouse that Bill trapped him in, only for Bill to reveal that the couch was made of human skin. Then it becomes alive, with eyes and a mouth, and you can even hear a faint heartbeat.
  • Bill tortures Ford with blue lightning. On-screen. With Ford gaining numerous burn marks. On a Disney show.
  • Bill has an Imagine Spot of him growing to planetary size and playing with the Earth as if it was his own plaything. He draws a smiley face on North America with his finger and we get to see the giant finger run through the cities, destroying them, and then he takes a bite out of the planet. His Henchmaniacs playing around with the other planets of the solar system isn't a pleasant thought either.
  • Bill's eye gets ripped out of the socket!
  • Bill turning into a multi-tiered, multi-armed, pyramid-spider thing that calls back to a lot of wall-climbing horror film tropes and has More Teeth than the Osmond Family. He uses this form to chase down the younger Pines Twins with the full intent of killing them to punish Ford for not giving him what he wants.
    • Bonus points for Bill straight-up telling Stanford to his face that he plans on reducing them to corpses, with what is possibly his deepest Voice of the Legion yet, and later on threatens the twins by saying he'll tear them to pieces molecule by molecule.
    • Also, the sheer Adult Fear reaction from Ford and Stan when this happens, combined with Tearjerker.
    • This line alone: You've tricked me FOR THE LAST TIME!!
    • After capturing the twins after they gave him the runaround in his pyramid, he storms back into the room as a giant and clutching the kids and threatens "Times up Ford! I have the kids! I THINK I'M GONNA KILL ONE OF THEM JUST FOR THE HECK OF IT!" and begins to slow roulette between Dipper and Mabel's symbols with his eye, while booming "Eeny meeny miney...", only cut short before the "you" by Stan (dressed as Ford) agreeing to let Bill into his mind.
      • Bill was already saying "YOU", and had pinched his fingers together to make good on it; they were fractions of a second from tragedy.
  • Bill turning everyone except the Pines family into a series of tapestries with faces of frozen horror.
  • Bill's defeat. His last moments are of him frantically breaking down as Stanley's mind is erased - with him still inside - and offering Stan whatever he wants, before his body starts to violently distort, glitch, and collapse on itself. Bill proceeds to turn black and lunge at Stan with a final cry of "STANLEY!" before Stan finally finishes him off. It's compounded by his petrified physical form appearing as a tombstone outside the Mystery Shack, assuring once and for all that Bill is dead.
  • Robbie's parents are putting zombies back in their graves where they belong, one of them being the former mayor all while being their usual cheery selves. Also, keep in mind that this was AFTER Bill was defeated.
  • The statue of Bill at the end, which unlike the one shown during the credits is in live-action. Even worse, the final code visible on the bus and Dipper's final speech on the show about finding Gravity Falls for yourself gives one the impression that the statue is real, and something's hidden out there with it, somewhere out in the woods of Oregon...
    HIDDEN DEEP WITHIN THE WOODS A BURIED TREASURE WAITS, SECRETS LOST AND STATUES FOUND BEYOND THE RUSTY GATES.


I'm watching you nerds...
http://tvtropes.org/pmwiki/pmwiki.php/NightmareFuel/GravityFalls