# Mister X

Mister X or Mr. X is commonly used as a pseudonym for someone whose name is secret or unknown.
Mister X may refer to:

## Comics

* Mister X (Marvel Comics), a supervillain in the Marvel Universe
* Mister X (Vortex), the protagonist in Dean Motter's comic book series of that title
* The Amazing Mr X (comics), Britain's first superhero, who first appeared in The Dandy comic in 1944

## Video games

* Mr. X (Resident Evil), antagonist first appearing in the 1998 video game Resident Evil 2
* A villain in the video game series Streets of Rage
* The villain in the video game The Ship
* The final villain in the video game Kung-Fu Master
* The pseudonym of Dr. Wily in Mega Man 6
** Xander Payne, a character from the Mega Man Archie comics
* The pseudonym of Olga Gurlukovich during the Big Shell Incident in Metal Gear Solid 2: Sons of Liberty

## Film and television

* Mister X (1958 film), a 1958 Soviet musical film directed by Yuli Khmelnitsky
* Mister X (1967 film), a 1967 Italian superhero film directed by Piero Vivarelli also known as Avenger X
* Mr. X (1987 film), a 1987 Bollywood sci-fi film starring Amol Palekar directed by Khwaja Ahmad Abbas
* Mr. X (2015 film), a 2015 Bollywood sci-fi film starring Emraan Hashmi, remake of Mr. X in Bombay (1964)
* Mr. X, the titular character of the 1964 Indian sci-fi film Mr. X in Bombay
* Mr. X, a recurring puppet on The Canadian Howdy Doody Show
* Mr. X, a recurring arch-criminal of comic Arabic films played by Fouad el-Mohandes
* Mr. X, in the animated series The X's
* Mr. X, a villain in the anime series Lupin III
* Mr. X (Simpsons), Homer's pseudonym in The Simpsons episode "The Computer Wore Menace Shoes"
* X (The X-Files), a character in the television series The X-Files
* The Amazing Mr. X, a.k.a. The Spiritualist, a 1948 thriller film
* Mr. X, the main character in the 1940s and 1950s radio and TV series The Man Called X
* Mr. X, an assassin in the 2008 film Wanted, played by David O'Hara
* Mr. X, a character who appears in the Fringe episode "Lysergic Acid Diethylamide"
* Mr. X, the pseudonym for Goofy in the animated short Aquamania
* Mr. X, a Teenage Mutant Ninja Turtles character associated with Mondo Gecko
* The placeholder name the farmer is given when he gets amnesia in the Shaun the Sheep Movie
* Mr. X, a secondary character in Big Time Rush
* Mr. X (Amphibia character), a character in Amphibia
** "Mr. X" (Amphibia episode), the character's eponymous debut episode

## Music

* Mister X (band), a street punk group from Belarus
* "Mr X", a song by Ultravox from their album Vienna
* "Mr X", a song and single by Pauline Murray And The Invisible Girls
* Mister X, a character in the operetta Die Zirkusprinzessin (The Circus Princess) by Emmerich Kálmán
* Mr.X, American DJ also known as Afrika Islam
* Mr. X, mystery music composer of the film Enai Noki Paayum Thota
* Mr. X, drummer formerly in the band The Meatmen
* Mr. X, a character from God in Three Persons

## Pseudonymous uses

* Donald Graves (Kremlinologist) (1929–2008), U.S. State Department analyst, from the 1982 Washington Post article "The Secret Files of Mr. X"
* George F. Kennan (1904–2005), American historian, in his essay "The Sources of Soviet Conduct"
* Carl Sagan (1934–1996), American astronomer, in an essay on his experiences with marijuana
* Norman Wexler (1926–1999), American screenwriter, in Bob Zmuda's Andy Kaufman Revealed
* Gaston Defferre (1910–1986), French Politician, using this pseudonym during the 1965 Presidential Elections
* Ben Zygier, a prisoner who was held in Israel
* The former longtime boyfriend of American radio talk show host, Robin Quivers

## Other uses

* Aeros Mister X, a Ukrainian paraglider
* "Mr. X", nickname of American golfer Miller Barber (1931–2013)
* Mr. X, a masked professional wrestler in the 1930s and 1940s, one of the identities of Cyclone Mackey
* Mr. X, a masked professional wrestler in the WWF in the 1970s, one of the identities of Jerry Balisok
* Mr. X, a masked professional wrestler in the WWF in the 1980s, one of the identities of Dan Marsh
* Mr. X (Straub novel), a novel by Peter Straub
* Mr. X, a player character in the board game Scotland Yard and its spin-off, Mister X
* Mister X, an alias used by Mayuka Kondō in the manga and anime series, Oniichan no Koto Nanka Zenzen Suki Janain Dakara ne!!