A servitor is the catch-all term applied to a wide class of mindless, cybernetic drones created from a fusion of Human flesh and robotic technology that are used to carry out simple, manual tasks across the Imperium of Man. Servitors were created due to the strict prohibitions against the development or use of machine intelligences according to the tenets of the Cult Mechanicus, whose tech-priests deeply fear the creation of Silica Animus. They believe such artificial general intelligences to be the embodiments of blasphemy against the Omnissiah.

While many of these programmable cybernetic slaves are genetically-engineered, vat-grown, sub-Human clones or replicae created by the Adeptus Mechanicus from Human genomes who have their bionic implants installed after “birth”, others were once truly Human.