 Mulder is Chris Carter (qv)s mothers maiden name. Mulders first  name, Fox, is the name of Carters childhood friend. Scully is the  name of the LA Dodgers sports announcer Vin Scully (qv), to whom  Carter listened as a child. In episode #6.19, The Unnatural, the  voice announcing the Dodgers game is none other than  Vin Scully (qv).