Doctor Doug Jackson
Initially seen as a SHADO psychiatrist & interrogator, and eventually becomes the only doctor we ever see in the SHADO medical center. Has a strong eastern-European accent, with a slightly sinister (some might say lovable?) manner.
Actor: Vladek Sheybal
Episodes: Exposed, Ordeal, Court Martial, Kill Straker, The Cat With Ten Lives, The Man Who Came Back, The Psychobombs, Reflections in the Water, Timelash, The Long Sleep