Created as an opponent for Godzilla, Rodan, and Mothra in 1964's Ghidorah, the Three-Headed Monster, Ghidorah is a golden dragon-like space monster with two legs, three heads on long necks, bat-like wings, and two tails. It was said to be 100 meters tall with a 150-meter wingspan and to weigh 30,000 metric tons. King Ghidorah was brought to life on the movie screen by a stunt actor inside an elaborate three-piece costume, with a team of puppeteers to control the beast's many appendages. Its alarming shrieks — a different ringing pitch for each of its heads — are among the genre's most recognizable sound effects. Its design is due to special effects director Eiji Tsuburaya based on a minimal description in the script: "It has three heads, two tails, and a voice like a bell."

In recent films Ghidorah has undergone several revisions to its origin and appearance — for instance, a 150-meter tall irradiated triplet of genetically-engineered pets with a Rodan-like cackle, called Dorats in Godzilla vs. King Ghidorah, and a 49-meter-tall guardian monster in Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack — and has been realized via CGI as well as suitmation.

I'll color it later