Rick Jones's alternate identity, A-Bomb, was created when Rick stole Red's Sandblaster in an attempt to help Hulk stop an invasion by Annihilus. He accidentally overloaded the vehicle's gamma core and the resulting explosion transformed him into a blue gamma powered hulk.
He is now one of the Agents of S.M.A.S.H. helping Hulk battle evil in a smashing way.
A rebellious orphan, Rick Jones stumbled into the test site for the Gamma Bomb and inadvertently caused Bruce Banner to be caught in the blast while trying to save Rick, transforming Banner into the Hulk. Rick became the Hulk's closest confidant, a member of the Avengers and a friend and sidekick to heroes like Captain America, Captain Marvel and Rom. For a time he was transformed into the gamma-powered monster A-Bomb.