I think final fantasy ripped it from Godzilla (see the etymology section): """ Ghidra, also known as "King Ghidorah," is an enemy monster in the Godzilla serie

I think final fantasy ripped it from Godzilla (see the etymology section): """ Ghidra, also known as "King Ghidorah," is an enemy monster in the Godzilla series. Typically, Ghidra is Godzilla's fiercest opponent, and it usually fights against humanity. """"