Richard Matheson was a US Senator who took a liking to Mulder and was interested in his work at the FBI. After the X-Files were shut down in 1994, Matheson prompted Mulder to visit the Arecibo observatory in Puerto Rico to continue his search for the truth. Eventually, Matheson distanced himself from Mulder because he felt his political career may be in jeopardy. (TXF: "Little Green Men")

Later that year, Mulder went to Matheson's office in an attempt to contact him to gain information about Scully's abduction, but he was intercepted by X, who told him that Matheson could not give him the information he wanted without risking himself. (TXF: "Ascension")

Mulder ran into Matheson years later while investigating a mysterious illness contracted by Walter Skinner. Matheson was directly involved in an illicit deal concerning nanotechnology. The incident further soured relations between Mulder and Matheson. (TXF: "S.R. 819")



In the Topps Comics series of The X-Files comics, Senator Matheson appears in "Remote Control, Part One" (the twenty-seventh issue).

Richard Matheson was portrayed by Raymond J. Barry

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