What If...? (1977) #12

• "What If... Rick Jones Had Become the Hulk?" – (Earth-7812) – Rick pushes Bruce Banner into the ditch first, causing his transformation into the Hulk. While Banner dedicates his life to curing the boy, Rick goes on to join the Avengers, become Cap's second Bucky, and swap atoms with Captain Marvel. Eventually, Banner manages to separate Rick from the Hulk while they're in the middle of a battle with Annihilus in the Negative Zone. Rick is rescued, and Hulk beats Annihilus into submission, becoming the new respected ruler of the Zone, admired and loved by the residents there.
Rick and Captain Marvel are also separated, causing Mar-Vell to live freely without having to return to the Negative Zone.

SOURCE: marvel.wikia.com