Mulder is a talented profiler, and a firm believer in the supernatural.

Agent Scully is a foil for Mulder in this regard.

As a medical doctor and natural skeptic, Scully is frequently able to approach the X-Files with complete detachment even when Mulder, despite his considerable training, is not.

Mulder and Scully are joined by John Doggett ( Robert Patrick ) and Monica Reyes ( Annabeth Gish ) late in the series, after Mulder is abducted.

The X-Files ends when Mulder is secretly subjected to a military tribunal for breaking into a top-secret military facility and viewing plans for alien invasion and colonization of Earth.

* Fox Mulder ( seasons 1 – 7, main ; season 8 – 9, intermittent ) – is portrayed by David Duchovny.

Mulder is an FBI special agent who believes in the existence of extraterrestrials and a government conspiracy to hide or deny the truth regarding them.

Scully is an FBI special agent, partner to agent Fox Mulder.

In season eight, she is assigned a new partner ( agent John Doggett ) after Mulder is abducted by aliens.

Skinner is originally the direct supervisor of special agents Fox Mulder and Dana Scully in the X-Files office.

Although he is originally portrayed as a somewhat malevolent character, Skinner eventually becomes a close friend of Mulder and Scully.

In the episode " Requiem ", The Smoking Man is believed to be killed after being pushed down a flight of stairs by Alex Krycek until the series finale " The Truth ", where Mulder and Scully travel through remote New Mexico and reach a pueblo where a " wise man " reputedly lives and is revealed to be the Smoking Man.

In the final episode of The X-Files, entitled " The Truth ", ex-FBI agent Fox Mulder enters the Mount Weather complex, which is controlled by a shadow government.

FBI Special Agent Fox William Mulder is a fictional character and one of the two protagonists of the Fox television series The X-Files.

Mulder is briefly reunited with Samantha's spirit.

After about a year in hiding, Mulder obtains crucial information from a secret facility about the date of the planned alien colonization effort, but is caught and put on trial for the murder of Knowle Rohrer.

* 1996: The Ogopogo of Lake Okanagan is referenced in " Quagmire ", a third season episode of the X-Files, in which Mulder and Scully search for an elusive sea-beast known as " Big Blue.

Cohn is portrayed by actor David Moreland in the X-Files episode " Travelers ", in which an elderly former FBI agent speaks to Agent Fox Mulder about the early years of the McCarthy era and the beginning of the X-Files.

Scully is a Special Agent of the United States ' Federal Bureau of Investigation, partnered with fellow Special Agent Fox Mulder for the first seven seasons, and in the eighth and ninth seasons partnered with John Doggett.

When creating the main characters Carter, sought to switch the usual gender stereotypes and made Mulder a believer and Scully a skeptic.

Of these, the " believer ", Fox Mulder, was created with a character-defining personal motivation, involving the disappearance of his younger sister during his childhood, which he would believe to be a result of alien abduction.

Due to their decision to continue The X-Files television series and try to appeal to a new generation of viewers, the production personnel knew from the beginning of season 8 that they were going to introduce another female character who would be a believer, as departing character Fox Mulder ( David Duchovny ) had been a believer.

Mulder believes in extraterrestrial unidentified flying objects ( UFOs ) and a government conspiracy to hide or deny the truth of their existence.

The season continued on from the 1998 feature film and focused heavily on FBI federal agents Fox Mulder ( David Duchovny ) and Dana Scully's ( Gillian Anderson ) separation from The X-Files, the assignment of new agents Jeffrey Spender ( Chris Owens ) and Diana Fowley ( Mimi Rogers ) to the division, and the demise of the Syndicate — a " shadow government " group attempting to cover up the existence of extraterrestrials — in the two part episode " Two Fathers " and " One Son ".

After years of investigating several X-Files cases with Mulder, Scully had slowly grown to believe in the existence of the paranormal.

In The X Files episode " The Sixth Extinction II: Amor Fati ", Fox Mulder has a hallucination that Earth has been colonized by the aliens.

However, during a period of time after Scully's cancer went into remission ( season 5 ), Mulder was convinced by Michael Kritschgau that aliens did not in fact exist, and that the government conspirators had merely concocted that threat as a smokescreen, to justify military activities and toy with him.

Mulder was also abducted by the aliens himself in 2000, and returned to Earth, almost dead, a few months later.

He tells Mulder and Scully all he has left to reveal ( including the fact that the aliens are scheduled to invade in 2012 ), and shortly after is finally killed by a missile shot from a helicopter ordered by Knowle Rohrer.

Mulder uses the vaccine to revive Scully, disrupting the stable environment of the lab and reviving the cocooned aliens.

Later, when Mulder was abducted by aliens and returned in a death-like state, Krycek attempts to again blackmail Skinner, with the means to save Mulder's life.

On November 27, 1973, Samantha was abducted by aliens from the Mulder family home on Martha's Vineyard, when she was 8 years old.

It was not long after his promotion that Mulder was abducted by aliens.

In the series, FBI special agents Fox Mulder ( David Duchovny ) and Dana Scully ( Gillian Anderson ) are the investigators of X-Files: marginalized, unsolved cases involving paranormal phenomena.

His belief in the paranormal springs from the abduction of his sister Samantha Mulder by extraterrestrials when Mulder was 12.

Around this time, Mulder first came across the X-Files, an obscure FBI section dealing with cases relating to the paranormal ; he pored over these cases in his spare time, becoming obsessed with them.

Initially, Skinner acts solely as a supervisor to Agent Mulder and Dana Scully's investigations of the paranormal.

He serves as an informant, leaking information to FBI Special Agent Fox Mulder to aid Mulder's investigation of paranormal cases, dubbed X-Files.

The series follows Federal Bureau of Investigation special agents Fox Mulder and Dana Scully, portrayed by David Duchovny and Gillian Anderson respectively, who investigate paranormal or supernatural cases, known as X-Files by the FBI.

Reyes ' first appearance in the episode " This Is Not Happening " was intended to add another character to the series who would readily believe in the paranormal, after the departure of David Duchovny and his character Fox Mulder.

She was initially introduced as an informant, leaking diplomatic information to FBI Special Agent Fox Mulder to aid his investigation of paranormal cases, dubbed X-Files.

| Mulder and Scully report on their most recent case to their superior, with each agent's account of what happened tainted by each's own bias, in the perception of the paranormal, of the secondary characters involved, and of each other.

Kersh acts as an antagonist who bureaucratically prevents special agents Fox Mulder, Dana Scully, John Doggett and Monica Reyes from investigating cases dealing with the paranormal, dubbed X-Files.

The song makes direct reference to FBI special agents Fox Mulder ( David Duchovny ) and Dana Scully ( Gillian Anderson ), the two main characters of the popular sci-fi TV series The X-Files who work on cases linked to the paranormal, called X-Files.

The song makes direct reference to FBI special agents Fox Mulder ( David Duchovny ) and Dana Scully ( Gillian Anderson ), the two main characters of the popular sci-fi TV series The X-Files who work on cases linked to the paranormal, called X-Files.

The use of Mulder and Scully are used to represent a metaphor for a relationship " turning pear-shaped "; that is to say a relationship becoming so " strange " that it could be " a case for Mulder and Scully ", a reference to the paranormal cases — the titular X-Files — the two investigate on the show.