This was the first time a Cyber Leader had appeared differently to the other Cybermen. The Cyber Leader was in control of the mission to invade and destroy Voga. The only noticeable difference was that the Cyber leaders head piece was partly painted black.
These Cybermen only appeared in the 1975 story Revenge of the Cybermen.
The Cyber LeaderCybermen can survive more efficiently than animal organisms. That is why we will rule the galaxy