Destoroyah's Japanese and English names both come from "destroyer." A possible reason that the name "Destroyer" isn't commonly used in various markets is because the word itself could not be trademarked by Toho. He is often referred to as "Destroyer" in dubbed versions of the film, while "Destoroyah" is Toho's official name for the character.
Destoroyah grows quickly and adopts several appearances throughout the film, including his microscopic form, 3-mm form, insect-sized form, 2-meter form, 18-meter crab-like forms, a larger aggregate crab-like form, a bat-like flying form, and a bipedal 120-meter, demonic final form. He also has some of the same features as the aliens from the Alien franchise.
He originated as a colony of Precambrian crustaceans that had been awakened and mutated when the Oxygen Destroyer was detonated to kill the original Godzilla in 1954. Hedorah may be an inspiration for Destoroyah, since both go through four stages in their life cycles and are strong opponents who were hard for Godzilla to defeat.
Destoroyah was first seen attacking fish in a fish tank in his microscopic form, turning them to bone. He eventually turned into his juvenile stage and attacked a warehouse. The army attacked Destoroyah, but many if them were killed. It was discovered that the Destoroyahs could be killed with cold temperatures, and a plan to kill them was put into action. The plan seemed to work, but the juvenile Destoroyahs combined into a large aggregate Destoroyah, and it was discovered that they were prehistoric creatures that were mutated by the Oxygen Destroyer when the first Godzilla was killed. The aggregate Destoroyah tuned into Flying Destoroyah, and attacked Tokyo. Godzilla Junior arrived in Tokyo and battled Destoroyah in his aggregate form. Destoroyah nearly killed Godzilla Junior, but Godzilla arrived and saved him. Destoroyah was sent flying into a warehouse, but he reemerged in his final form. He carried Godzilla Junior off and dropped him into another warehouse, killing him. Godzilla was furious, and attacked Destoroyah. Destoroyah and Godzilla fought, but Destoroyah was winning. Godzilla started to meltdown, giving him extra strength to defeat Destoroyah. Destoroyah was temporarily defeated, but he tried to fly away from Godzilla's meltdown. The military blasted him with ice canons, freezing him and sending him falling to the ground, where he died.
Aggregate Destoroyah's leg first appears fallen off of Zilla in issue #2. In issue #3, the Aggregate Destoroyahs make a full appearance and attack San Diego, but retreat to the sea after Steven Woods and his soldiers discover that a weapon named the "ice-box" is very effective against them. In issue #4, the final form of Destoroyah rises from the sea and fights Godzilla.
Destoroyah is considered by many to be Godzilla's ultimate foe, a title that is only shared by a handful of other monsters, such as King Ghidorah, Hedorah, Gigan, MechaGodzilla and SpaceGodzilla, This is due to the fact that Destoroyah could survive multiple hits from his red spiral atomic ray (although he was shown throwing up large amounts of blood), an attack which instantly killed or crippled most enemies in one shot. Also, Destoroyah had fought Godzilla, at the point of the peak of his power many times, and actually won a majority of them. Destoroyah is also the only enemy that actually hurt Godzilla emotionally when he killed Godzilla Jr.
Like Hedorah, Destoroyah is a composite life form formed from trillions of near-microscopic organisms and thus possesses vast capacities to adapt and regenerate. The base organism resembles a miniature horseshoe crab barely larger than a speck of sand. Trillions of these creatures would later combine to form Destoroyah's aggregate form which manifested as several man-sized crustacean monsters which were reminiscent of the Alien. When threatened by the JSDF, the creatures merged again into a larger aggregate form and then into its winged bat-like form. After being wounded by Godzilla Junior, Destoroyah regenerated into its demonic ultimate form and would later temporarily separate into its aggregate form in an attempt to overwhelm Godzilla during their battle. It appears that when the individual Destoroyah organisms fuse, they all die if the resulting creature is killed before it can split up into a smaller form and reform, this is shown when Godzilla nearly kills Destoroyah by blasting the exposed floral pattern on his chest and Destoroyah breaks up into a smaller form but when the Super X-III and Godzilla blasted out his wings the Super X-III used the Ice Maser and froze it at a microscopic level, he couldn't separate and thus all the Destoroyah organisms making up the final form were killed.
Destoroyah's primary weapon was a oxygen-destroyer ray fired from his mouth which could vaporize organic matter and was even capable of penetrating most metals. All of Destoroyah's forms possessed the ability to fire the ray but its aggregate form was also equipped with a pair of extending secondary jaws that injected the micro-oxygen directly into an opponent's bloodstream and drained a victim's energy. In its final form, the horn projecting from Destoroyah's forehead had the ability to generate a blade of energy powerful enough to cut through Godzilla's flesh. The aggregate forms were equipped with spiked claws similar to those of a praying mantis while Destoroyah's flying and ultimate forms possessed a tail tipped with a grappling pincer that was strong enough to even hold Godzilla. The tail also had the ability to drain energy and give an energy discharge. In the manga version of Godzilla vs Destoroyah, he is capable to shoot his horn at Godzilla and then his head falls after Godzilla blow up his body, he fires his last beam and successfully killed Godzilla.
Destoroyah appears in Save the Earth, where his rage attack in Save the Earth is the Oxygen Destroyer, where he fires a purple blast of energy into the air that comes down on his opponent, inflicting a large amount of damage.Godzilla: Unleashed, Destoroyah can release an orb of micro-oxygen energy that will draw nearby kaiju and then detonate.
Height: 110 meters
"Destoroyah is death incarnate. Born from anaerobic environments deadly to all other life, Destoroyah seeks nothing else than the total annihilation of all life-forms in existence. Although his massive clawed hands, long crescent-tipped tail, and taloned feet can tear monsters apart in a heartbeat, Destoroyah tends to use ranged attacks in compensation for his sluggish land movement. He can breathe choking clouds of micro-oxygen, emit explosive spheres of micro-oxygen, and create oxygen destroyer comets of pure annihilation. His most fearsome attack, however, is the piercing Laser Horn, which extends from his central horn. This focused energy can slice through even the strongest monster flesh and reduces buildings to rubble."
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