Rick Jones is the Hulk's best friend, and he too was caught in a gamma explosion. When Hulk was taking him home, Rick suddenly began mutating and caused a rockslide that piled on top of him. Hulk tried to get him out, but Rick got himself out and when he did, he came out a blue-skinned creature similar to Abomination. Rick then dubbed himself "A-Bomb" and became an ally to the Hulk with his powers.
This character is exclusive to the DLC Super Pack, which is received by pre-ordering the game on Xbox 360 or Playstation 3.