- You may be looking for the novel's other Cyber-Leader known as the Limehouse Lurker.
This Cyber-Leader was part of a Cyberman sleeper force stationed in the Le Mur Engineering compound in Jersey in 1939. It was the second Cyber-Leader of the operation. The first had fled to mainland Britain, after the Germans occupied the Channel Islands during World War II, where it was hit by a Luftwaffe bomb and went rogue, becoming the Limehouse Lurker.
In November 1940, this second Cyber-Leader was revived by the Seventh Doctor, threatened by Captain Hartmann. The Cyber-Leader declared that all humans in the compound would be converted but the Doctor took control of the Cybermen using the Cyber command unit and ordered them to attack the Nazi soldiers. The Cyber-Leader quickly became a casualty of the ensuing battle. (PROSE: Illegal Alien)