Dr. Bruce Banner is a brilliant scientist whose life changes forever after exposure to intense gamma radiation during an experiment. Whenever he experiences extreme anger or stress, he transforms into the Hulk, a massive green powerhouse with incredible strength. While Banner constantly struggles to control his destructive alter ego, he ultimately uses the Hulk's immense power to protect innocent lives. His story is defined by the conflict between intellect and raw emotion, making him one of Marvel's most complex heroes.