On the Cybermen's adopted homeworld of Telos, two slaves named Bates and Stratton escape from their work party and decapitate a Cyberman so that they can use its helmet to disguise Stratton as a Cyberman and enter Cyber Control.
Two slaves named Bates and Stratton escape from their work party and decapitate a Cyberman so that they can use its helmet to disguise Stratton as a Cyberman and enter Cyber Control. This was on the Cybermen's adopted homeworld of Telos.