Predator/Nightmare Fuel


 * The world as seen through the Predator's heat vision. Also the distorted recordings of Billy's laugh and Mac's voice ("Over here", "turn around", "anytime").
 * The part where Dillion looks around the jungle after hearing "anytime" and the Predator's cackles. As he looks around (we see from his point of view), you can clearly see him standing on the branch.
 * The Killers over in the comics, take a Predator and remove all forms of honor like not killing those that can't fight back and limiting their tech to make things even, they also use Aliens as hunting dogs.
 * In a strange real life example, according to P.W. Singer's Wired for War during the 2004 battles for Fallujah the U.S military set up a system to broadcast the Predator's laugh throughout the city in an effort to intimidate the insurgents. It worked so well that a marine scout team had to request it be turned off because it was freaking them out.
 * The Predator in general. In can camouflage itself and making itself near invisible (unless water comes into play), can mimic human voices to lure victims, collects human skulls and spines as trophies, etc.
 * "Want some candy?"