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Mark Gregory was a researcher for International Electromatics. He assisted in developing the Cerebration Mentor for use as a weapon against the Cybermen. After UNIT rescued Professor Watkins, Tobias Vaughn had the Cybermen shoot and killed him. (TV: The Invasion) His body was recovered by C19 and kept in frozen storage within the Vault. (PROSE: The Scales of Injustice)

Behind the scenes Edit

  • Gregory's first name was not given on-screen, only in the novels.