Teknoman

Earth's defense forces remain locked in a losing battle against the evil alien venomoids, led by Darkon. In the midst of the conflict, a ship plummets toward Earth and explodes, and a stranger named Blade emerges unscathed but suffering from amnesia. In his possession lies a Tekno crystal, which he can wield to transform into Teknoman, an unstoppable fighting machine. As the war begins to tilt in humanity's favor, they discover that Darkon is breeding Teknomen from humans, one of whom bears an exact likeness to Blade. Where did these humans come from, and why is Blade able to transform into a Teknoman?