who was the smoking man on the x-files
The arch-nemesis of FBI Special Agent Fox Mulder.
Cigarette Smoking Man
Cigarette Smoking Man (abbreviated CSM or C-Man; sometimes referred to as Cancer Man or the Smoking Man) is a fictional character and one of the primary antagonists of the Fox science fiction-supernatural television series "The X-Files". He serves as the arch-nemesis of FBI Special Agent Fox Mulder. 
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Cigarette Smoking Man [SEP] Introduction
Cigarette Smoking Man (abbreviated CSM or C-Man; sometimes referred to as Cancer Man or the Smoking Man) is a fictional character and one of the primary antagonists of the Fox science fiction-supernatural television series "The X-Files". He serves as the arch-nemesis of FBI Special Agent Fox Mulder. In the show's sixth season, his name is said to be C.G.B. Spender, but Dana Scully suggests this is one of "hundreds of aliases"; the show's characters and fans continue to refer to him by variations of "the Smoking Man" because he is almost always seen chain-smoking Morley cigarettes. In the eleventh season, he reveals his full name to be Carl Gerhard Busch.