As the worlds most dangerous supervillains break out of the Vault, the Cube, the Big House, and the Raft, five of Earths mightiest heroes assemble a crime fighting alliance called the Avengers. The Avengers line up initially includes Hank Pym (who assumes both his Ant Man and Giant Man alter egos), Hulk, Iron Man, Thor, and the Wasp.[3] Captain America, Black Panther, and Hawkeye have since joined the roster as regulars.[4] After the defeat of Kang the Conqueror, the Avengers learn that a war between two alien empires, the Kree and the Skrulls, will devastate the Solar System and that they must be ready for the coming onslaught.