Mega Man Legends/Nightmare Fuel


 * Pretty much all the ruins in the first game, as well as all the Bonne's strongest robots (Tron's giant spider robot, the Feldynaught is a standout example). The second game's ruins are pretty scary too, although special mention goes to the Saul Kada Ruins.
 * This article would be remiss if it did not mention this music:
 * That horrible buzzing sound your alarm makes when Reaverbots are nearby is guaranteed to make you jump. Every single time. Thankfully, it was removed in the sequel.