During the 2014 "Original Sin" storyline, Bruce Banner confronted by the eye of the murdered Uatu the Watcher. Bruce temporarily experienced some of Tony Stark's memories of their first meeting before either of them became the Hulk or Iron Man. During this vision, Bruce witnessed Tony modifying the gamma bomb to be more effective prompting Bruce to realize that Tony was essentially responsible for him becoming the Hulk in the first place. Subsequent research reveals that Tony's tampering had actually refined the bomb's explosive potential so that it would not disintegrate everyone within the blast radius, with the result that Tony's actions had actually saved Bruce's life.