Cyber-Leader (Supremacy of the Cybermen)

At the end of the universe, a Cyber-Leader served as second-in-command to an asteroid colony of Cybermen. (COMIC: Supremacy of the Cybermen)

Biography
The Cyber-Leader served as second-in-command to an asteroid colony of Cybermen at the end of the universe. In an alternate timeline, Rassilon discovered the Cybermen's colony after being exiled from Gallifrey by the Twelfth Doctor, and, inspired by the Cybermen's desire to survive even to the very end of N-Space, discussed with the Cyber-Leader a plan that would allow the Cybermen to conquer Gallifrey and, by extension, all of time and space. However, the Cyber-Controller, who the Cyber-Leader served under, chose to keep its existence as the Cybermen's ultimate commander hidden from the Time Lord, and eventually the Cybermen betrayed Rassilon at the zenith of his plans in an attempt to reforge N-Space into the "Age of the Cyberiad". Ultimately, the timeline was reset by the Doctor and Rassilon, erasing Rassilon's encounter with the Cybermen and the Cyber-Leader. (COMIC: Supremacy of the Cybermen)

Appearance
The Cyber-Leader's Cyber-suit was near-identical to those of the Cybermen that evolved from the Cyber Legions and formed the Cyberiad, (PROSE: Ghost in the Machine) such as the surviving army on Hedgewick's World of Wonders. (TV: Nightmare in Silver) However, its Cyber-helmet had black side handles, a completely black faceplate, save for a pair of tiny clear rings around the Cyber-Leader's eye sockets, and a transparent glass covering through which its brain could be seen, (COMIC: Supremacy of the Cybermen) in a similar vein to the Cyber-Lord which led a small scavenger group of Cybermen on Earth in 1851. (TV: The Next Doctor)