Jayne Kadett

Jayne Kadett was a human undercover investigator in the 41st century. 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 Tenth 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)