The centerpiece of a scheme by time-traveling terrorists from the year 2204 to bring Japan to its knees in the past before it could become a corrupt economic superpower, King Ghidorah was the result of three genetically engineered pets called Dorats being left behind by the Futurians on Lagos Island in 1944. In 1954, the Dorats were exposed to the Castle Bravo hydrogen bomb test conducted at nearby Bikini Atoll, fusing them together and transforming them into King Ghidorah. In the year 1992, the Futurians took control of King Ghidorah and unleashed him in Japan, demanding the nation surrender to their demands as the monster leveled Fukuoka and moved on to Hokkaido. Unable to defeat the three-headed monster, the Japanese government attempted to recreate Godzilla, whom they believed had been erased from history by the Futurians, by using a nuclear submarine to irradiate the Godzillasaurus they believed was lying dormant in the Bering Sea.Their plan only resulted in the already-mutated Godzilla becoming even larger and more powerful, and the now-revitalized King of the Monsters subsequently came ashore in Hokkaido.