The Radiographer is a character from the Captain Scarlet And The Mysterons episode Operation Time. He processed the x-rays of General Tiempo on Cloudbase for Dr. Theodore Magnus, and noticed that Magnus's hand showed a full picture, and not just an x-ray. Because of his discovery, he can be seen as one of the most important people in the fight against the Mysterons, despite not being a Spectrum agent.
The Radiographer was voiced by Jeremy Wilkin.