Agent Fox Mulder is one of the central protagonists of the X-Files series and is portrayed as an eccentric FBI agent
who has become obsessed with uncovering a mass conspiracy concerning alien invasion, supernatural crime and
other strange phenomena that is being hidden from the public by powerful groups with sinister plans for the world as a whole. As a boy Fox witnessed his sister's abduction by aliens and this became the driving force of his career, pushing him onward in his quest to find the truth behind the often impossible cases he is put up against.
Later in his career, he is partnered with forensic surgeon Dana Scully to solve cases known as "X-Files," cases which have seemingly paranormal or otherwise unexplainable characteristics to them.