65 million years ago, an alien race known only as the Creators came to Earth to develop bioweapons. After experimenting with and creating new life forms, they created humans and used them as the base for powerful shapeshifting creatures called Zoanoids, which are the basis for werewolf myths and other such stories. The Guyver itself existed prior to these experiments and was used by the Creators as a space suit of sorts, and through an experiment, a human being activated a dormant Guyver unit and became the very first human Guyver, dubbed Guyver Zero. Guyver 0 surpassed all expectations, the effect of the Bio-Boosted Armour on a human being, which was developed for war, was far greater than the effect on the aliens. Unfortunately, the host was physically uncontrollable, and thus dubbed "Guyver", which meant "Out of Control" in the Creators' language. The Creators sent the leader of the Zoanoids, a powerful Zoalord called Alkanphel to combat Guyver 0, and gave him a Unit-Remover, a tool to revert a Guyver back to the unbonded Unit-G form. Alkanphel removed the unit from Guyver 0 and incinerated the human who was in possession of the very first Unit under the Creators' command. But the Creators were now afraid. They decided to destroy humans by throwing a Moon-sized asteroid at Earth, eliminating all traces of their experiments. Alkanphel managed to destroy the asteroid, but not before the Creators unleashed a telepathic attack on Alkanphel's mind severely weakening his powers and body.
Alkanphel survived for millions of years in a stasis sleep within a ship of the Creators heavily damaged by Guyver 0, waiting for the day he'd be strong enough to rise again. He is in a weakened state and must rest often, especially if he uses his powers. It is believed a Guyver unit would not only restore him, but make him by far the strongest being in creation as he already is bestowed with the powers of the strongest of all Zoalords. 400 years ago, he encountered Hamilcal Balcas, who helped him found the Chronos Corporation. Archanfel made Balcas the first of twelve Zoalords, beings of vast psychic power, with the ability to transform into battle forms that are all but invincible. By creating their own Zoanoids from any available subjects, Chronos can place obedient sleeper agents anywhere they wish, and activate them all at once to take over the world.
Chronos discovered three, dormant, surviving Bio-Booster units (Unit-Gs), but a Test Type Zoanoid referred to as a "Malmot" (the Japanese term for guinea pig) stole the Unit-Gs and escaped from Chronos. In the Bandai OVA version, Malmot stole the Unit-Gs for Agito Makishima under the premise that he would be restored to his former self. During a foray with Chronos' troops, the Malmot caused an explosion that scattered the Unit-Gs across the forest they were in. Out of the three units, Chronos only recovered one,
a second year high school student Sho Fukamachi, out with his friend Tetsuro Segawa, found one of the units. After accidentally pressing the control medal, it violently bonded with him, transforming him into Guyver I.
Having the Guyver makes Sho a constant target of Chronos, who first goes after him, then later uses his family and friends as hostages. Sho and his friends gradually learn more about the Guyver and its origins as the story progresses, and even witness the culmination of Chronos's world domination plans, forcing them to fight to free the world from oppression.
Guyver weapons
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Sonic orbs (two orbs at the Guyver's mouth that produce head exploding sound waves)
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The Mega-Smasher (Two high-power particle cannons contained beneath the Guyver's chest armour) It should be noted that the Mega-Smasher is considered, in Guyver canon, to be the most powerful particle beam weapon in existence on Earth. It has been shown heavily gauging Mount Minakami, as proof of its raw power
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Head Laser (A multi-directional laser mounted just above the control metal on the Guyver's head) More commonly referred to as the Headbeam.
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High Frequency Swords (Blades that extend from the Guyver's forearms. These blades vibrate at an extremely high frequency allowing them to cut through almost any material with ease.)
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Gravity globe (The purpose of the gravity globe is to siphon gravitational energy from a higher dimension.
Two main uses include giving the Guyver the ability to fly and to unleash destructive gravity waves in the form of a directed "Pressure Cannon". It can also be used as a one way shield.)
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the control metal (located on the Guyver's forehead) that regulates the armour - and prevents the organism from literally eating its host alive. It also records the genetic structure, and memories of its host, so that if the host is injured or killed, it regenerates that host from even the smallest bits of genetic material. If the control metal is destroyed, the Unit absorbs its host. The control metal has tentacles that reach into the host's brain, and is the hard wiring of the Unit that allows the host to use the systems of the Guyver.
What is a Zoanoid?
The Cronos Corporation has discovered the technology to give humans the ability to transform into superhuman, monsters soldiers. These 'normal' Zoanoids are the cannon-fodder of the series, and are constantly getting destroyed left and right.
When killed, their bodies disintegrate into little more than wisps of vapor and damp spots on the ground, so there are no bodies - human or monster - left which can be used as proof of what's going on.
Initially most Zoanoids we run across are members of Cronos, but the Corporation is also experimenting with ways to involuntarily transform humans into Zoanoids without their knowledge. It is safe to assume they erase the memories of these people of their being processed.
They can be activated from a distance by any Zoalord. These humans come under the Zoalords' telepathic mind-control techniques as soon as they transform, giving the organization an unquestioningly obedient army of super soldiers. These Zoanoids are genetically programmed to obey the orders of Zoalords (with some exceptions now and then, like Aptom).
Once these experiments are successfully completed, Cronos begins to openly make its bid to control the world. Zoanoids come in hundreds of different designs. Some are very specialized, like the Enzyme and Hyper Zoanoid units, and are few in number.
Others like Gregole, Ramotith and Vamore are more general-purpose and exist in much larger quantities. While not all humans can be made into Zoanoids, a very large percentage of humans possess the potential.
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