Khan (Earthshock)
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Dr. Khan was the assistant of Professor Kyle.
Dr. Khan was a member of an expedition exploring a recently discovered cavern rich in fossils somewhere on Earth. Khan was killed along with six others by the Cybermen's androids due to their close proximity to the Cyber-bomb's hatch. Khan's coat and a small pick hammer that belonged to Khan were found by Kyle just after she and Lieutenant Scott discovered the Fifth Doctor and his companions. (TV: Earthshock)