Cyber-Leader
The Cybermen from Pete's World designated a Leader when they invaded Earth in our universe in 2007. The Cybus Cyber-Leader was identified by black handle bars on its helmet. When the Leader was destroyed, the information it had was downloaded into another Cyberman who would be upgraded to Cyber-Leader. The first leader during the battle Of Canary Wharf was destoyed by the Preachers whilst the second was slain by Yvonne Hartman in her converted form.(DW: Army of Ghosts / Doomsday)
A Cyber-Leader will appear in The Next Doctor; slightly redesigned, it not only has black handlebars but a black face-plate and an exposed brain.
See also
The Cyber-Controller (cybus) (Cyber-leader's superior).