Jet Jaguar debuted in Toho's Godzilla vs. Megalon in 1973, a robot hero created from a fan design contest who grows to kaiju size to fight alongside Godzilla. Despite appearing in only one classic film, the character became a cult favourite and returned in games, comics and later Godzilla media. His distinctive roar circulated online through kaiju clips and soundboards, where fans isolated the two-second cry for edits and tributes. It remains popular because it captures the charm of Showa-era monster movies in a single, instantly recognisable burst.