Though fast and deadly, they can only move and attack when not looked at by Employees, Vir colligerus, or colloquially named Coil-heads, have not been studied extensively due to their extreme unpredictability and dangerous properties. They have been known to combust into flames when being dissected or even deactivated, and they carry dangerously high levels of radioactive particles. Due to this and other reasons, it has been highly speculated they were created as biological weapons of war.