Created by Craig McCracken, The Powerpuff Girls premiered on Cartoon Network in 1998 and followed three kindergarten-aged heroes protecting the city of Townsville. Its opening sequence, narrated in a bold, deadpan style, explained how Professor Utonium accidentally created the girls with Chemical X. Short clips of the theme later circulated on video and soundboard sites as a shorthand for 1990s cartoon nostalgia. Fans still use it for team introductions and playful power-up edits because the music and narration are recognisable within the first few seconds, even without any picture from the original show.