John (John and Gillian), appearing in theDoctor WhoTV comic strip John (Tomorrow People), appearing in the children's science-fiction TV seriesThe Tomorrow People John from Cincinnati, eponymous TV character John Constantine, main character of DC Comics' Vertigo titleHellblazer John Corben, DC Comics super villain fromSupermanknown as Metallo John, the head of the Visitors force in the science-fiction franchiseV John Gage, a character from the TV seriesEmergency! Red John, the antagonist ofThe Mentalist Master Chief (Halo)(John Sierra-117), main character in the critically acclaimedHalovideo game series Big Boss (Metal Gear), whose real name is John, one of the main characters from the video game seriesMetal Gear John H. Watson, known as Dr. Watson, fictional sidekick and biographer of detective Sherlock Holmes in Arthur Conan Doyle's stories John MarstonandJohn "Jack" Marston Jr, the two main protagonists inRed Dead Redemption John Robie, the main character in Alfred Hitchcock'sTo Catch a Thief. John Stewart (comics), one of the four Earth members of the Green Lantern Corps John Egbert, main character in the webcomic Homestuck