Faceplate

The faceplate was the metal face plating of the Cyberman helmet. (WC: Real Time/AUDIO: Real Time)

Variants
Certain Cyber-Leaders, also designated Cyber-Lords, had black facial plating with visible brains behind the forehead. (TV: The Next Doctor, A Good Man Goes to War, GAME: Blood of the Cybermen) In Pete's World, the Cyber-Controller John Lumic also had a visible brain. (TV: The Age of Steel)

Cybershades uniquely had bronze faceplates. (TV: The Next Doctor)

Individual cases
Partially converted during the Battle of Canary Wharf, Lisa Hallett's head was supported by an incomplete Cyber-helmet without facial plating. Following a failed conversion which resulted in his death, parts of a Cyber-helmet's face were seen embedded into that of Dr Tanizaki. (TV: Cyberwoman)

Following his cyber-conversion, Danny Pink removed his faceplate to reveal himself to Clara Oswald. (TV: Death in Heaven)

The Cyber-helmet known as Handles sustained damage to its faceplate. (TV: The Time of the Doctor)