Welcome to Gaia! ::

The Units are initially mysterious bio-organisms that bond with a host, giving that being strong armour and enhancing the host's own strength and speed. They are actually living things, feeding off the host's bio energy as well as harnessing it to power various weapon systems such as the maga-smasher (laser cannon), sonic swords, gravitonic generator orb (which allows the Guyver to fly as well as generate a nasty gravitonic pulse as a weapon), and other various systems revealed slowly as the manga continues. In addition, the control medal that regulates the armour - and prevents it from literally eating its host alive - records the genetic structure of its host; so that if the host is injured or killed, regenerates that host from even the smallest bits of bio-booster material. If the control medal is destroyed, the Unit absorbs its host. The control medal has tentacles that reach into the host's brain, and it is the hard wiring of the control medal that allows the host to use the systems of the Guyver. In addition there are telepathic organisms that attach themselves to the back of the host which allows the host to call the armour into being, as well as communicate with other Guyvers. When not needed, the armour is stored in what can best be described as a sub-dimension; it follows the host constantly so as to be instantly available when needed. While quite powerful, there are a number of things that can damage or destroy a Guyver. The various Enzyme-type Zoanoids were specifically developed to exude a type of acid that dissolves the bio-booster armour. A battle-trained, experienced Zoalord has enough pure power to destroy a Guyver, as do some of the Hyper Zoanoids. And, finally, the Creators developed a weapon that Cronos, upon its discovery, calls a Unit Remover. It actually separates the control medal from its host, forcing the Guyver to return to its inactive state. Unlike the Zoanoids, the Guyver is humanoid in form - mostly because its hosts are human. The Guyver seems to have been designed for use by the command crew element of Creator spaceships, as in later chapters Sho uses his control medal to speak telepathically with one of the craft. Later in Books 14 and 15, we learn that the Guyver Unit was in fact, NOT an armour for the crews that live in the Creator's spaceships. In fact, the Creators created the Guyver specifically for enhancing the battle ability of humans. However, due to the 'out-of-control' aspect of the Armour, the Guyver attacked the Creators, destroying one of their ships. The remover was sent to defeat this Guyver which it did.