The Weeping Angels first appeared in the 2007 Doctor Who episode Blink, where the stone statues could move only when they were not being observed. The concept made them one of the show's most famous modern monsters, and their eerie sound became shorthand for creeping horror in fan edits, reaction videos and Halloween content. Because the threat is silent, sudden and always closer than it looks, the noise still works as an instant signal that something is about to go wrong.