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William B. Davis poster

William B. Davis

William Bill Davis (born January 13, 1938) is a Canadian actor, known for his role as the Cigarette Smoking Man on The X-Files. He has also appeared in Stargate SG-1 as Damaris, a Prior of the Ori and as Mayor Tate on Smallville. Most recently he has appeared in ABC's Masters of Science Fiction as the President of the United States.