Gigan first appeared in the 1972 Toho film Godzilla vs. Gigan as a cyborg monster from space, built with hook-like arms and a buzzsaw in its chest. The character returned in later Godzilla productions and became a fan favourite for its alien design and brutal fighting style. Short clips of its distinctive roar later circulated through Godzilla soundboards, fan edits and versus videos, where the sound became shorthand for a mechanical, otherworldly threat. It remains popular because it is instantly recognisable to kaiju fans and fits dramatic entrances.