This Cyber-Lieutenant was part of the leadership hierarchy of the Cybermen. The Lieutenant served as the assistant to the Cyber-Leader and possibly second-in-command of the Cyber-Force. Unlike the Cyber-Leader, the Cyber-Lieutenant had no markings to identify it.
The Lieutenant always remained close to the Leader during operations or missions that involved the survival of the Cyber-race. The Lieutenant tended to be more cautious than the Leader, often highlighting the drawbacks to the Leader's planned course of action. Even so there appeared to be a strict hierarchy in place; when a Cyber-Lieutenant objected to his Leader's making inaccurate reports to the Cyber-Fleet, the Leader told him that "You are outside your function." (TV: Silver Nemesis)
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