Bruce Banner, also known as the Hulk, is a fictional character in the Marvel Comics universe. Created by writer Stan Lee and artist Jack Kirby, Bruce Banner first appeared in "The Incredible Hulk" #1, published in May 1962. He is a brilliant scientist who, due to exposure to gamma radiation, transforms into the Hulk, a large, green, muscular humanoid possessing a vast degree of physical strength that increases with his emotional stress, particularly anger.