King Ghidorah

King Ghidorah (キングギドラ Kingu Gidora) is a three-headed dragon kaiju that first appeared in 1964.

Origins
A malevolent space monster, King Ghidorah attacked the planets Venus and Mars under his own power, thousands of years ago, eradicating the planet's entire civilization in only three days. In 1964, King Ghidorah arrived on Earth inside a meteorite, eventually emerging from it and attacking the planet's cities. After his initial defeat, King Ghidorah would be taken control of by various alien species.

History
Thousands of years ago, King Ghidorah attacked the planet Venus, eradicating the planet's advanced civilization and rendering Venus an uninhabitable wasteland. The few Venusians that survived the monster's attacks fled to Earth, where they interbred with the native humans and gradually began to lose their identity.

In the present day, a meteor shower was visible in the skies above Earth, with one meteor crashing down in the Kurobe Valley in Japan. A scientific team led by Professor Murai traveled to the valley to examine the meteor, which exuded a strange glow and even produced its own magnetic field that fluctuated in strength. After several days of study, Murai and his colleagues observed that the meteor was actually growing in size. One day, the meteor began producing an extremely powerful magnetic field before splitting open and launching a ball of fire into the sky above. The fireball exploded several times before finally taking the form of King Ghidorah, having come to do to to Earth what he did to Venus in the past. King Ghidorah flew over Japan, leveling cities effortlessly with his gravity beams. As the cosmic terror approached the Mount Fuji area, Mothra tried to convince her fellow Earth monsters Godzilla and Rodan to cease their fighting and join forces against King Ghidorah. The monsters refused, forcing Mothra to take on King Ghidorah by herself. King Ghidorah blasted the larva with his gravity beams, arousing the anger of Godzilla and Rodan, who finally entered the battle. While King Ghidorah was more powerful than the three monsters individually, he was no match for their combined might, and was beaten into submission and covered in a silken cocoon. As Godzilla pelted King Ghidorah with boulders and threw him off a cliff, King Ghidorah finally retreated and flew back into the void of outer space.