Roboman

Robomen were humans converted by the Daleks into wholly obedient slaves during the 22nd century Dalek invasion of Earth. These surgically modified captives were used for patrols and overseeing other slaves. The robomen were needed because there were few Daleks on Earth.

The Daleks captured prisoners and operated on their brain in a surgical procedure called the Transfer, fitting them with large, helmet-like headsets. The Daleks' mind control technique was unstable, and the Robomen would eventually go insane and commit suicide. (DW: The Dalek Invasion of Earth)

The Daleks used a more sophisticated implantation technique after conquering Vega VI. Rather than fitting their subjects with grafted positronic discs and communication devices, the circuitry was placed inside the brain and the robomen retained independent thought. These robomen were much harder to detect and far more dangerous. Orders from their Dalek masters would be filtered through normal thought processes, the subject seemingly unaware of the disc implant. One such roboman was Gordon Pellan, who was gunned down by Earth Alliance forces. (BFDE: The Human Factor)

Mirana, another of these newer, more sophisticated Robomen, was linked directly to the Dalek Emperor's mind. She was unaware of the linkage and when told of the implant, she was confused. The implant itself was deemed impossible to remove without killing the subject, but it could be disabled. Mirana's implant was disabled surgically, though she could still receive transmissions from the Dalek command net. The remnants of the Earth Alliance used her to track a small battalion of Daleks on Lopra Minor. (BFDE: Project Infinity)

Ganatus was a less sophisticated roboman. (BFA: The Mutant Phase)

A number of robomen, similar in appearance and sophistication to those used in the 22nd century, were captured by Space Security Service agents when they retook the planet Caridos from the Daleks and brought to Space Station 7 for study. The robomen were completely inert until a Dalek task force invaded, reactivating them to fight from within. (GN: The Only Good Dalek)