Hulk is a character.
The Hulk is a fictional 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 ) . Mark Ruffalo . Ruffalo gained international prominence by portraying the Marvel Comics character the Hulk in The Avengers ( 2012 ) and Avengers : Age of Ultron ( 2015 ) .