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-Bomb is rash, however he is friendly and enthuastic. Seth Green says that his character is "enthusiastic, lacks cynicism, very fun, playful, sarcastic. He's really thrilled to be doing this kind of thing (fighting alongside the other Hulks)".  He would be considered the child of the group given his lack of fighting or even being a Hulk. He's very loyal to Hulk, and stands up for his friend when the humans run in fear.
Powers and AbilitiesEdit
Aside from his superhuman gamma-powered strength, he possesses a near impenetrable armored skin, has the ability to turn into a rolling wrecking ball, and can blend into his surroundings like a chameleon. Although he could not change a large foot piece of a hulk buster mech along with him, or the case could be that only certain things/objects of certain size or material can change with him, although this is yet to be confirmed.
He got a laser foot from the Red-Hulk-Buster. He later got the Gamma Rocket Launcher which can shoot out a powerful gamma blast, which Red Hulk gave to him telling him, "Don't ever say i didn't do nothing for ya Jones.", and which A-Bomb accidentally pulled the trigger, which, unfortunately was aimed at Red, and singed his body and hair.