Sixty-seven million years ago, in the Cretaceous period, a demonic three-headed space dragon, Desghidorah, attacked Mars and turned it into a barren wasteland, literally sucking the life out of the planet. This creature, not content to allow just one planet in this solar system to suffer its wrath, advanced to the nearby planet of Earth. Desghidorah began its assault on the planet, but it didn't expect retaliation. A race of intelligent beings called the Elias populated the planet, and they fought against the three-headed demon. The guardians of the Elias, a race of giant moths named Mothra, engaged Desghidorah in battle. The war between the giant insects and the space monster was long and brutal. Finally, the despised dragon was defeated, buried, and sealed in a secret location. Earth, however, was nearly ruined by the great war. The dinosaurs and many other species of animals went extinct, and the civilization of the Elias was almost obliterated. In the end, only three beings of this ancient species survived; their names were Moll, Lora, and Belvera. Moll and Lora became the avatars of Mothra, but Belvera, corrupted by the loss of her species, became evil. She sought to one day release Desghidorah upon this world once more.
At the site where the ancient artifact was uncovered, the ground shook violently, and Desghidorah's tomb began to rise into the sky. The man who discovered the seal was placed under the control of Belvera, who used him to demolish the tomb by driving a bulldozer carrying a load of dynamite directly into the jagged structure. Her plan was a success, and after it absorbed a massive amount of energy from the surrounding forests, Desghidorah announced its triumphant return to a terrified world. The violent beast continued to draw the life out of the forest, for it was planning to soon gain enough energy to take to the skies on crimson wings.
Desghidorah, now unopposed, continued to absorb the life out of Hokkaido, creating a massive cloud that covered the island. Eventually, it gained enough energy, and, from its stone-like back, it sprouted two mighty wings. Desghidorah was finally ready to take on the world in full force.
The Mothra Larva sought out an ancient, powerful tree and by using its energy, transformed into an even more powerful adult Mothra. The new Mothra once again engaged Desghidorah in battle, this time defeating him and once again imprisoning him within his ancient mountain prison, never to be seen again.
Desghidorah can emit Hell's Flame from the mouth of his middle head.
Desghidorah spits fireballs from the mouths of all three of his heads.
Desghidorah is able to perform a Shock Pulse.
Desghidorah can unleash a powerful shockwave released from all over his body.
Desghidorah can send a red electric surge through his bites.
Desghidorah is able to do a Fiery Prye Road by causing the ground to split open & release flames from within the earth.
Desghidorah flies at the speed of Mach 23.
Desghidorah can release hurricane winds from his wings.
Desghidorah's wings bare a striking resemblance to Destoroyah's.
Desghidorah has many resemblances to Keizer Ghidorah - four-legged, and (in its first form) apparently flightless.
Desghidorah's roar was later reused for the Ultraman Tiga monster Gatanozoa.