Rick Jones is A-Bomb

Courtesy from Wikipedia:

Richard Milhouse "Rick" Jones is a fictional comic book character in Marvel Comics. Rick has been a sidekick to the Incredible Hulk, Captain America, Captain Marvel (Mar-Vell), Rom the Spaceknight, and Captain Marvel (Genis). He has been an active participant in many significant Marvel Universe story lines including the Kree-Skrull War and the Destiny War. Rick Jones recently acquired powers causing him to transform into a massive creature calling himself A-Bomb.

Enterely sculpted in Magic Sculp white.