Mecha King Ghidorah first appeared in Godzilla vs. King Ghidorah in 1991, when the time-travelling Futurians rebuilt the defeated King Ghidorah as a cybernetic weapon with a mechanical centre head and metal wings. The character became a fan favourite because it combined the classic three-headed dragon design with a futuristic, machine-enhanced look. Short clips of its roar later circulated among kaiju fans and editors, who reuse it to introduce powerful villains, parody giant-monster battles, and give fan edits an instantly recognisable Godzilla-era threat.