Predatorz

The Predatorz, disparagingly refered to as vermin (蛔虫 Kaichū), are the main antagonists later then turn into the a part Rider army of Kamen Rider Predators. Predatorz is a generic name of the human-size homunculi created by Prescott Pharmacy, which are grown from a virus-size artificial lifeform called the Predator Cell. Their instinct to consume more human-based proteins so they usually hunt humans, or cannibalizing the other Predatorz in extreme cases.

These homunculi are entirely capable of blending into human society and feeding on a normal diet if their human-eating instincts are suppressed by specialized drugs. However, once the cells fully awakens, their instinct to consume humans take over and they become human-eating monsters. To make things worse, the process is entirely irreversible, resulting in killing them being the only way to avoid further casualties.