The Daleks are a fictional race of armoured alien mutants from the British science-fiction series Doctor Who, first appearing in 1963. Created as relentless conquerors housed in tank-like casings, they became one of the show's most enduring villains, recognised by their metallic voices, eyestalks and repeated calls to exterminate their enemies. Their distinctive sound has since become shorthand for comic menace in fan edits, reaction videos and memes, which is why a brief Dalek clip remains instantly recognisable even to viewers who have never watched a full episode.