I am Cyberking my mind inside the Cyberman and You will obey me.
All Hail The Cyberking!
A CyberKing was the name that could be used to refer to the command unit of a dreadnought class ship and the ship itself. The CyberKing was a huge bipedal walker operated by a living controller. These ships were used to front a Cyberman invasion by crippling whole cities and upgrading their populations en masse.
History
The human Miss Hartigan was chosen by the Cybermen to become the CyberKing. Her memory was restored by an Infostamps, and was apparently killed when she realized what she was.
Appearance
The CyberKing control unit was converted using a headset that connected the victims mind to the CyberKing, changing their speech patterns and their eye colour throughout the process. Once the conversion was complete the controlling unit could operate the cyberkings movements and in the case of Miss Harigan could even take command of the cybermen themselves. the CyberKing ship was a massive Cyberman-shaped walker, using its two legs to stride through the battlefield. It had a weapon attached to each arm; a laser blaster on its left arm, and a mortar launcher on its right arm. The head served as the command centre for the vehicle, while its body contained a large cyber-conversion unit, allowing it to transform organic life into new Cybermen. (DW: The Next Doctor)
History
One CyberKing was created by Cybus Cybermen in London in 1851 after (as the Doctor theorised) the end of the 2009 Dalek Invasion of Earth collapsed the walls of the Void, allowing the Cybermen to escape and travel back in time using a stolen Dalek Dimension Vault. Using child labour to generate electricity and produce the ship underneath the River Thames, Mercy Hartigan was made into the CyberKing. She refused to be cyber-converted, and instead used her mental powers to command the entire Cyberman army. The ship rose out of the Thames, with Miss Hartigan and several Cybermen controlling the machine inside the part of the vehicle shaped as a Cyberman mouthpiece, and rampaged across London. Using Jackson Lake's "TARDIS" and an improvised device made from Cyber infostamps, the Doctor severed the link between Hartigan and the Cybermen.The Cybermen and Miss Hartigan were both killed in the process whilst the CyberKing was transported into the vortex. (DW: The Next Doctor)