Nightmare Fuel: Captain America: The Winter Soldier

  • The Reveal of Winter Soldier's identity and Cap having to fight him. It's no wonder why he goes in shock upon finding out. Imagine your best friend that has supported your whole life, was there when tragedy struck and when you were bullied, and who now doesn't even remember who you are, wants you dead, and will do the act personally.
    • There's something unsettling about how, when Cap first sees him with his mask off and calls him by his name, the Winter Soldier just growls "Who the hell is Bucky?" in a tone that makes it clear he genuinely doesn't know what the heck his target is talking about.
  • Arnim Zola's present day form as a vast computer inside what's supposed to be a munitions storage facility at Fort Lehigh, especially the way he appears on the old screens and his reveal of HYDRA's grand plan.
    • The way he talks with a slight echo and his face jerking up and down. Then, as a missile heads to obliterate him, Captain America and Black Widow, he talks calmly about his own approaching death. Bear in mind that this is is a man who, seventy years prior, was a coward that sold out HYDRA to save his own skin.
  • The police ambush of Nick Fury. The fact that all of those "cops" were sent to take him out prove just how deadly and serious HYDRA is about people meddling with their plans.
    • Nick Fury being injured at all can be pretty damn distressing, given his Magnificent Bastard tendencies usually mean he's on top of everything, and comes out unscathed.
  • The Stinger, featuring Quicksilver and Scarlet Witch in Von Strucker's custody, not quite sane and continuously using their powers, ending with a quick shot of Wanda using her magic destructively. Speaking of insanely powerful things in the hands of evil, did you ever wonder where Loki's scepter went? Von Strucker has that too.
  • During the final Captain America vs. Winter Soldier fight, after being disarmed, Bucky pulls out a knife. There's a split-second shot of him charging at the camera, an absolutely feral look on his face.
  • A lot of the elements of the Winter Soldier's character and treatment are pretty horrific in general.
    • The electroshock therapy that Bucky is subjected to, in order to wipe his memories of Captain America.
    • Not to mention his flashbacks to everything that happened since his "death" as Bucky, and his transformation into the Winter Soldier. A brief moment in the flashback shows more of Bucky's arm being amputated, from his point of view. They did that without anesthetizing him. The fact that all of the flashbacks are POV shots from Bucky losing his arm and being dragged through the snow to catching a glimpse of his reflection as he's being frozen in the lab makes them extra creepy.
    • The Winter Soldier's theme on the score. It starts subtle and quiet, and builds into an distorted industrial cacophony culminating it what sounds like a scream of terror. This not only reflects the reaction people who know what he is have when fighting him, but also what it feels like to be, somewhere in Bucky's real mind.
    • The Winter Soldier showing up in Pierce's house late at night, sitting in the dark, not saying anything, and even barely blinking is creepy in its own right. Then the scene switches a gear as the housekeeper comes in from around the corner, with Pierce saying a mildly regretful "I really wish you'd knocked." and shoots her. The way he does it with the casual tone of "Sigh, now I have to go through the trouble of finding new help..." is chilling.
    • Almost as bad is how everyone else reacts to him. Any time anyone besides Rogers goes up against him, they lose. Badly. And it barely even seems to slow him down. Natasha's brief battle with him just pissed him off and ended with her being shot. Anybody that tries to fight him like the SHIELD launch personnel and the Quinjet pilots just gets taken out quickly, efficiently, and without a single word from him. The Winter Soldier is as close to the Terminator of the original movie as the MCU has come yet.
  • Despite him being in league with HYDRA, Agent Sitwell's death is pretty shocking, especially with how we've come to known him in the Marvel One-Shots and previous films. It just happens so suddenly and without warning. Sitwell is in the backseat of the car that Steve, Natasha and Sam are in, when Bucky/Winter Soldier comes out of nowhere, grabs Sitwell through the window, and flings him screaming into the other lane of traffic only to be struck and reduced to pieces by an oncoming truck.
  • When Steve Rogers arrives home and sees Nick sitting on the chair. Nick's appearance after escaping the police and Bucky is far from pleasant. He looks drained of energy, tired, and incredibly weak. The sight is just chilling.
  • Black Widow's face when chased by the Winter Soldier in the bridge scene. She's terrified on the brink of panic. The implication of how terrifying the Winter Soldier is comes when one remembers that the only other time when Black Widow had a similar reaction was when she was alone with the Hulk trapped in the bowels of the Helicarrier in Avengers.
  • Pierce activating the security badges placed on the World Council members which ignite and burn through their chests, killing them. Then threatening to do the same to Natasha.
  • Some of the deaths that Bucky carries out, such as tossing a man into a jet turbine or shooting a guy in the throat, leaving him to die an agonizing death.
  • Natasha's line, "Everyone we know is trying to kill us."
  • The villains' grand scheme combines multiple strains of contemporary popular technophobia, from anonymous, inescapable drone assassinations to "big data"-scale privacy violations, all at the behest of an uncaring computer in the hands of equally-uncaring and corrupt authorities.
  • The Insight carriers targeting hundreds of thousands of people... including a man who might very well be playing ball with his son.