Mister X is a fictional character often associated with mystery and intrigue. He is commonly depicted as a secretive figure, often wearing a disguise or mask to conceal his identity. This character has appeared in various forms of media, including comic books, movies, and television shows, where he typically engages in espionage or crime-solving. The name "Mister X" has been used in different contexts, such as in the Mister X comic series created by Bernard Krigstein and Howard Chaykin. Additionally, the character has inspired various adaptations and interpretations, making him a versatile figure in popular culture.