Vagrant Story/Nightmare Fuel


 * The enemies called "Quicksilver". You meet them in the Undercity, which is dark, damp and claustrophobic. Then you suddenly hear giggling and large dolls resembling children stumble towards you, holding knives. In fact, the in-game monster manual says that these dolls are possessed by the souls of dead children. If that is nothing to you, then the variety in the Iron Maiden sub dungeon will make you squeem.
 * Another enemy from the same area is Harpy, a big flightless bird that would look quite normal, if it wasn't for a giant human face protruding from its chest.
 * You wouldn't think a big chicken with a face on its gut would be frightening, but IT WORKS. To make matters worse, daring to fight one could potentially end your game by turning you to stone, and your first Harpy fight is mandatory.
 * The Iron Maiden dungeon room names. Hint: they are not named after Heavy Metal bands. This page covers more than a few of them, try not to think too hard about the others.
 * The terrifying gleeful/insane expression on.
 * What happens to Grissom is especially frightening.
 * Asura in Iron Maiden B3. All three of its faces look at you and has a very creepy laugh.
 * The final boss' final form.