files referred fictional character american science fiction television series files serves informant leaking information fbi special agents fox mulder dana_scully aid investigation paranormal cases dubbed files character serves replacement killed season finale killed appearing seasons eventually replaced portrayed series début second season episode host character appear screen episodes later role originally conceived female cast role initial scenes deemed unsatisfactory producers leading replacement williams portrayal intended introduce personality completely different character predecessor positively received critics fans conceptual history character originally intended woman cast role replaced shooting scene writing staff felt able create right chemistry stars williams previous experience writers series creator chris_carter suggested williams portrayal role intended act portrayal predecessor character written performed scared selfish character prior episode breath felt character going fans series simply copy actor worth having series regular included episode scene murders witnesses seen speaking fox_mulder morgan felt scene reflected paranoia difference predecessor noting guy willing lose life letting secret guy scared williams stated attempted character motives imagine backstory preferring play role little background possible stated know interesting williams background fight choreography stemming role missing action beginning allowed prepare help create character actions scenes including character brawl mitch_pileggi character walter_skinner episode end game williams stated portrayal role based character hawk series hire character arc introduced series phone fox_mulder david_duchovny second season episode host telling mulder friend fbi character appear screen episodes later aiding mulder investigation leaking information secret military project vietnam war agenda unclear proved want mulder dead episode end game approached dana_scully gillian_anderson pleads needs know mulder believing life danger initially refuses subsequently confronted walter_skinner mitch_pileggi recognize mulder location brief intense skinner episode loyalty mulder confirmed trapped train car equipped time bomb mulder escape attacked brutally men black assassin fatally shoots step car boards car time left save mulder alien human hybrid car transporting save mulder carries safety car explodes season opener position informant discovered syndicate suspicion arises finding photographs taken smoking man william davis false information planted elder behest order root leak attempting relay information mulder goes apartment surprised fellow men black operative gray haired man fatally shoots strength mulder writes blood meaning special representative secretary general united_nations clue leads mulder death appears times lone gunmen origin story unusual suspects set death ghost series finale truth reception character received critics entertainment_weekly included character list black sci icons number vanderwerff writing praised williams acting adding wished writers figured way vanderwerff fellow writer zack_handlen felt character assassination appropriately shocking calling scene memorable death sic series felt immediate introduction character successor importance loss episode handlen called best mulder explaining reluctant provide information sure play running series writer frank_spotnitz called lethal killer planet noted feels episodes chiefly responsible character popularity fans williams nominated screen actors guild award outstanding performance ensemble drama series work alongside gillian_anderson david_duchovny mitch_pileggi
X (The X-Files)