Mr. X is a fictional character portrayed by Steven Williams in the TV series The X-Files.
In the first episode they appeared in, titled The Host (season 2), they were 45 years old.
They appear in 15 episodes out of a total of 217 aired and have accumulated 438 positive votes.
The character of Mr. X is mainly associated with Fox Mulder, Smoking Man and Walter Skinner.
Episodes15
The Host
episode S2.E2 september 1994Mulder pursues a humanoid, parasitic organism that uses sewage systems as its home.
Sleepless
episode S2.E4 october 1994Mulder is on the manhunt for a Vietnam veteran who can project his consciousness into other people's minds to kill them. Mulder and Agent Krycek try to uncover the conspiracy behind the killer's powers.
Ascension
episode S2.E6 october 1994Mulder and Agent Krycek are in a race against time to find and rescue abducted Scully before crazed Duane Barry can take her to what he believes to be his alien puppet masters.
One Breath
episode S2.E8 november 1994Scully's comatose body is discovered at a local hospital and her life is hanging in the balance. When Mr. X shows Mulder the high price he'd have to pay if he truly wants justice for Scully, Mulder must choose between hope and revenge.
Fresh Bones
episode S2.E15 february 1995The death of a Marine, who allegedly committed suicide, unearths a disturbing truth at a Haitian refugee camp.
End Game
episode S2.E17 february 1995Mulder is forced to make an impossible choice, when the alien bounty hunter gives him an ultimatum - Scully's life for Samantha's.
Soft Light
episode S2.E23 may 1995Scully's former student, Det. Kelly Ryan, asks the agents to help her catch a runaway government scientist responsible for several mysterious disappearances. Mulder realizes that the man is deathly afraid of his shadow for some reason.
Nisei
episode S3.E9 november 1995An "alien autopsy" videotape and a murder spark Mulder's search for a strange creature. Scully looks for information about her disappearance.
731
episode S3.E10 december 1995Mulder becomes trapped aboard a train rigged with an explosive device. Scully searches for the truth behind the government's secret experiments.
Wetwired
episode S3.E23 may 1996Mulder and Scully investigate a series of murders linked to a mysterious device that alters television signals causing paranoid hallucinations. One of them falls victim to it.
Talitha Cumi
episode S3.E24 may 1996After his mother suffers a stroke under strange circumstances, Mulder searches for a strange, benevolent alien man that possesses miraculous healing powers.
Herrenvolk
episode S4.E1 october 1996With his mother on deathbed and the alien bounty hunter in pursuit, Mulder decides to put the alien healer in mortal danger for a chance to finally uncover the whole truth behind the alien conspiracy. Meanwhile, Mr. X's cover is blown.
Unusual Suspects
episode S5.E3 november 1997In May 1989, the Lone Gunmen meet for the first time when they assist a woman who claims the government plans to use civilians in a secret experiment.
Jump the Shark
episode S9.E15 april 2002The Lone Gunmen, with the (unwanted) aide of Morris Fletcher, must stop a destructive virus from entering the populace.
The Truth
episode S9.E19 may 2002Mulder's return leads to him being tried for murder before a military tribunal where he seeks to prove the very existence of an alien conspiracy and justify the maintenance of the X-Files.
- The Host
- Sleepless
- Ascension
- One Breath
- Fresh Bones
- End Game
- Soft Light
- Nisei
- 731
- Wetwired
- Talitha Cumi
- Herrenvolk
- Unusual Suspects
- Jump the Shark
- The Truth
Best moments9
- Mulder becomes trapped aboard a train rigged with an explosive device. Scully searches for the truth behind the government's secret experiments.
- With his mother on deathbed and the alien bounty hunter in pursuit, Mulder decides to put the alien healer in mortal danger for a chance to finally uncover the whole truth behind the alien conspiracy. Meanwhile, Mr. X's cover is blown.
- Scully's former student, Det. Kelly Ryan, asks the agents to help her catch a runaway government scientist responsible for several mysterious disappearances. Mulder realizes that the man is deathly afraid of his shadow for some reason.
- Mulder and Scully investigate a series of murders linked to a mysterious device that alters television signals causing paranoid hallucinations. One of them falls victim to it.
- After his mother suffers a stroke under strange circumstances, Mulder searches for a strange, benevolent alien man that possesses miraculous healing powers.
- Mulder pursues a humanoid, parasitic organism that uses sewage systems as its home.
- Mulder is on the manhunt for a Vietnam veteran who can project his consciousness into other people's minds to kill them. Mulder and Agent Krycek try to uncover the conspiracy behind the killer's powers.
- Scully's comatose body is discovered at a local hospital and her life is hanging in the balance. When Mr. X shows Mulder the high price he'd have to pay if he truly wants justice for Scully, Mulder must choose between hope and revenge.
- The death of a Marine, who allegedly committed suicide, unearths a disturbing truth at a Haitian refugee camp.
- 731
- Herrenvolk
- Soft Light
- Wetwired
- Talitha Cumi
- The Host
- Sleepless
- One Breath
- Fresh Bones