Nightmare Fuel / Avatar
  • The scene of Hometree being burned and brought to the ground. It's heartbreaking and terrifying at the same time, especially since it's inevitable that many Na'vi, including children, were killed.
    • The 9/11 parallels, said to be unintentional, are extremely eerie. From the collapsing tree trunks to the ash and smoke after the collapse, it really does resemble September 11th.
  • Colonel Quaritch stabbing the Thanator got a bit... violent.
  • Banshees and Thanators and Viperwolves...As beautiful as Pandora is, it's home to some terrifying lifeforms.
  • When the Na'vi are shown losing the battle... that flaming direhorse...
    • What makes those few minutes when the Na'vi are being massacred indiscriminately even more horrifying & tearjerking is that things like this has actually happened in the real world. Not the mini mechas & the 10 ft tall humanoids, but time & time again in our history indigenous people have gone up against a foreign power armed with vastly superior military technology in defense of their lands. Many of them fought bravely, sometimes extremely so. Yet, except for a handful of times, they lost. Very badly.
  • What happened to Norm's Avatar. What really makes it freaky is when he's forced out of his chamber, clutching his heart, shuddering and breathing...
    • A deleted scene reveals that Wainfleet walks up to him and shoots him at point blank range with that massive gun of his. Imagine the outcome of that...
    • Even if Norm's Avatar had a painless and pacific demise (which he hadn't, but that's besides the point), poor Norm actually experienced death. Not a near death thing, but for a moment he felt how it feels to die. Think about it.
      • So does Neytiri when her ikran Seze is shot.
  • Much of the final battle is this to the RDA troops who scream out in terror upon seeing their horrible imminent deaths, like the doorgunner who sees the other helicopter's rotors coming at him, or the soldier who falls when the Valkyrie is damaged and is crushed between two heavy pallets.
    • The soldiers on the ground when the Pandoran wildlife comes crashing down on them, literally in a few cases, and are crushed, gored or eaten alive.
  • The scene near the end where Jake just about dies from asphyxiation after his link is broken and he's exposed to the open air. If Neytiri hadn't figured out what to do in time...
  • This didn't make it into the final cut, but in the draft of the script, Tsu'tey survives his fall out of the Valkryie Bomber. Wainfleet, loaded up in his AMP suit comes across him. He doesn't shoot him. He doesn't stomp on him. He brings out a knife, picks up Tsu'tey by the queue and slices it off at the base. Keep in mind that a queue is akin to a Na'vi's nervous system. Tsu'tey's screams are said to be agonizing. Make matters worse, he holds it up like a trophy.
    Wainfleet:' I hear this is worse than death for you, chief.
  • The scene where Neytiri tries to drag Jake's unconscious body through the forest while massive tree clearing machines roll towards them. Think about it: desperately trying to carry someone you just realized you love away from these machines that are so massive they are clearing away 20 ft tall trees like they were nothing. It's particularly heart wrenching to hear her screaming at Jake to wake up.
    • Not to mention that particular grove of trees was a direct link to her ancestors. RDA was essentially bulldozing a graveyard and cathedral at the same time.