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
 * 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!!