Gern

From Tardis Wiki, the free Doctor Who reference

Cyber-Controller (PROSE: Doctor Who and the Tenth Planet) Gern was a Mondasian Cyberman and one of the four Cyber-Leaders who led the invasion of Earth.

Gern seized control of International Space Command HQ in Geneva, declaring himself Controller of Earth. Soon after, however, Gern and all the other Cybermen around the world were eliminated when their home planet and power source, Mondas, disintegrated. (TV: The Tenth Planet; PROSE: Doctor Who and the Tenth Planet)

Behind the scenes

The Cyber-Controller as seen in Flower Power.