World War Hulk was a 2007 comic book crossover storyline published by Marvel Comics and starring the Hulk.[1] The series is composed of five main issues titled World War Hulk, with Greg Pak as writer and John Romita, Jr. as penciller, and three other limited series: World War Hulk: Frontline, World War Hulk: Gamma Corps, and World War Hulk: X-Men. It also ran through several extant Marvel comics series.