Hulk Buster Iron Man: Tony Stark was born with extremely high intelligence, he graduated MIT at a young age and took over Stark Industries when he was just 21. While visiting a far east Stark plant, an explosion sent a piece of shrapnel dangerously close to his heart. This potentially fatal condition lead to the creation of his first Iron Man suit. Through the years Tony has created numerous new suits including one to take on the unstoppable Hulk.

Gamma Hulk: Supervising the trial of an experimental gamma bomb for the Department of Defense at a remote testing ground in New Mexico, Dr. Bruce Banner rushed to rescue teenager Rick Jones after he strayed into the test area. But in saving young Jones' life, Banner himself was bathed in gamma energy, eventually giving rise to The Incredible Hulk!