Cyber-Controller

The Cyber-Controller served as an authority figure for both the Mondasian Cybermen of our universe and the Cybus Cybermen of another universe. The Controller gave orders to the Cyber-Leaders and their subordinates from a central base.

Mondasian Cyber-Controller
On Telos, a Cyber-Controller awoke with the other Cybermen from the Cyber-tombs and took charge. Taller than the others, the Controller had an enlarged, dome-shaped semi-transparent brain case lit from the inside. He also lacked the Cyberman chest unit. The Cyber-Controller had such authority that, upon awakening, the other Cybermen appeared to salute him. (DW: The Tomb of the Cybermen)

Later, he served to co-ordinate from Telos. He recognized the Doctor, who he had met previously. The Controller had changed physically, now having changed to resemble the other Cybermen of that era. He had a chest unit. He now had a metal, though still enlarged, brain case. (DW: The Tomb of the Cybermen)

Mysteries
We do not know at what time in history, the Cybermen developed the Controller, if more than one existed at any one time (and if so, how many) or their relationship to the Cyber-Planners.

Cybus Cyber-Controller
The Cybermen of the other universe made John Lumic, their creator, the Cyber-Controller, albeit against his will. The Controller acted in a similar way to the Mondasian Cyber-Controllers, though unlike them, he remained seated in a chair, connected to it by tubing. He did, however, have full mobility as long as he disconnected the tubing. This Cyber-Controller wasn't much else different from the other Cybermen, except his brain was visible and he had more advanced vision circuits. (DW: The Age of Steel)

During the "Battle of Canary Wharf", the Cybermen automaticly upgraded a cyberman to Controller when the previous had been destroyed.