The '' ' Red-Haired Man ' '' , played by Stephen McHattie , is a Man in Black who worked for the First Elder , though he claimed to be an agent of the NSA . He worked as an assassin , garroting several Japanese scientists who had been working on an alien-human hybrid in the hopes of surviving colonisation . He nearly kills Mulder twice , but is eliminated by X in the season 3 episode " 731 " . In the '' X-Files '' DVD collection , his name is given as " '' ' Malcolm Gerlach ' '' " , though he is never named onscreen
Japanese scientists
Unit 731
Men in Black (The X-Files)