For those not in the know, Guyver Units are organic mechanisms. Versatile alien Bio-Booster armors that fits onto any user and increases their strength and speed tenfold. Powerful, but can be dangerous. Guyver Units have a control metal that regulates the user's power and prevents overload.

Guyver Units do have their drawbacks. For example; merging of the Unit to user is painful and invasive. And if the Control Metal is ripped out, the armor will... degenerate and basically eat the user alive. These CWS-made Units have none of those drawbacks, and no painful processes.