The sound comes from Godzilla in The Return of Godzilla, released in 1984, which rebooted the Toho kaiju series with a darker, more serious tone. Godzilla's vocalizations in this period were designed as layered animal growls and roars to make the creature feel massive and hostile. This longer growl version has been widely clipped and shared online by monster movie fans, editors and soundboard users who need a recognizable Godzilla threat sound that is longer than a short roar sting.