who plays the role of the first fbi agent that is mentioned above?
David Duchovny.
The X-Files

The series revolves around Federal Bureau of Investigation (FBI) special agents Fox Mulder (David Duchovny),
who was the smoking man on the x-files The arch-nemesis of FBI Special Agent Fox Mulder. how was the character depicted in the series? Kim Manners, a director of several "X-Files" episodes, said that the Smoking Man was the show's version of Darth Vader. what was the storyline of the series? The series revolves around Federal Bureau of Investigation (FBI) special agents Fox Mulder and Dana Scullywho investigate X-Files: marginalized, unsolved cases involving paranormal phenomena. can you tell me something about the character who resembles the "smoking man"? He is a key member in a government-conspiracy unit known only as the Syndicate, who are hiding the truth of alien existence and their plan to colonize Earth. His power and influence remain strong, even after most of the Syndicate is destroyed.
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The X-Files [SEP] Introduction
New main characters were introduced: FBI agents John Doggett (Robert Patrick) and Monica Reyes (Annabeth Gish). Mulder and Scully's boss, Assistant Director Walter Skinner (Mitch Pileggi), also became a main character. The first five seasons of "The X-Files" were filmed and produced in Vancouver, British Columbia, before eventually moving to Los Angeles to accommodate Duchovny. The series later returned to Vancouver to film "The X-Files: I Want to Believe" as well as the tenth and eleventh seasons of the series.