The Hulk is a superhero appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in the debut issue of The Incredible Hulk (May 1962). In his comic book appearances, the character, who has dissociative identity disorder (DID), is primarily represented by the alter ego Hulk, an immense, green-skinned, hulking brute, possessing a limitless degree of physical strength, and the alter ego Dr. Robert Bruce Banner, a physically weak, socially withdrawn, and emotionally reserved physicist, both of whom typically resent each other. Lee stated that the Hulk's creation was inspired by a combination of Frankenstein and Dr. Jekyll and Mr. Hyde.
Following his accidental exposure to gamma rays while saving the life of Rick Jones during the detonation of an experimental bomb, Banner is physically transformed into the Hulk when subjected to emotional stress, at or against his will. This transformation often leads to destructive rampages and conflicts that complicate Banner's civilian life. The Hulk's level of strength is usually conveyed proportionate to his anger level. Commonly portrayed as a raging savage, the Hulk has been represented with other alter egos like a gangster (Joe Fixit), a merged personality (Merged Hulk), a mindless, destructive force (War), a brilliant warrior (World-Breaker), a self-hating protector (Devil Hulk), a genius scientist in his own right (Doc Green), and several minor alter egos.
