Harley Quinn first appeared in Batman: The Animated Series in 1992, created for the show before moving into DC comics, with Arleen Sorkin defining her voice. Calling Bruce Wayne's alter ego 'Bats' became her affectionate, mocking nickname for him, the opposite of his famous I'm Batman seriousness. Clips of her taunts later spread through fan edits, cosplay videos and soundboards, where this short challenge survives because it captures her mix of romance, mischief and danger in one instantly recognisable cartoon line.