Mecha King Ghidorah first appeared in the 1991 Toho film Godzilla vs. King Ghidorah, where the three-headed monster King Ghidorah was rebuilt with cybernetic parts after its defeat. The mechanical version kept the original creature's triple roar but gave it a colder, machine-like character that fit its new metal body and weapons. Fans later ripped the roar for soundboards, fan edits and gaming videos, where it works as shorthand for a powerful, unstoppable boss. Its link to classic Godzilla kaiju history keeps it recognisable to monster-movie fans today.