Jayne Kadett

Jayne Kadett was a human undercover investigator in the 41st century, and a companion of the Tenth Doctor.

After a thief stole Cyberman blueprints from the Torchwood Archive and resurrected the army to sell as private soldiers Jayne tracked him to Centuria, where she found he had been converted into a cyberslave. Jayne was then kidnapped by the Cybermen, along with the Doctor, and the pair were taken for cyber-conversion. After they escaped, the Doctor realised the whole planet was likely infested with Cybermen and thousands of lives were at risk. Jayne then joined him to help track them all down. (COMIC: The Power of the Cybermen)

Jayne and the Doctor then detected a hypnotic signal coming from an airship terminal on the continent of Azlon, and upon arrival discovered that the terminal was being used as a cyber-conversion factory, and that a hypnotic beam was being used to subjugate humans and newly-converted cyber-drones. Jayne and the Doctor pretended to be hypnotised in order to enter the facility, and when the Doctor shut down the signal the cyber-drones regained their humanity. Chaos broke out, and Jayne and the Doctor managed to escape before the cyber-factory was destroyed. (COMIC: Drones of Doom)