The Voilax are a species of aliens in Estrangeria. They are controlled by Jeff Anderson, the prime minister of Great Britain, who has them under a trance using his Implant Machine. The Voilax were originally a species famed for warfare, most notably against the Sontarans, the Kulty'n and Guarnd. This was because the Implant Machine could control the species, meaning that they were not troubled by emotions or anything else that might cause them to retreat.