"World War Hulk" is a Marvel Comics storyline that features the character Hulk, who returns to Earth after being exiled to the planet Sakaar. During his time there, he becomes a gladiator and leads a rebellion against his oppressors. After a series of tragic events, including the destruction of Sakaar, Hulk seeks revenge on the Illuminati, a group of superheroes who sent him away. In this storyline, Hulk confronts various heroes, including Iron Man, Thor, and Doctor Strange, as he believes they betrayed him. The conflict escalates into a massive battle, showcasing Hulk's immense strength and rage, ultimately leading to significant consequences for both Hulk and the Marvel Universe.