The reason I had picked this book up is that I heard Marvel had "retold" a lot of their superhero origins for a "modern audience" with these "Season One" graphic novels. Bruce Banner has created a weapon called a "Banner Bomb", which utilizes Gamma radiation. He gets exposed to the blast radius when he saves teenager Rick Jones. At first it doesn't seem like he's affected but the Hulk soon appears.
In this interpretation, Banner seems a bit angry and the Hulk is too smart. His rage comes from Banner having been an abused child. And, of course, Betty Ross is now Lieutenant Elizabeth Ross. My reaction to the whole update is "eh". But I did like the last story collected, HULK: ASUNDER PART ONE, which has a bearded Hulk living far beneath the Earth, where he's the protector of a race of underground humanoids. His brief rest is interrupted by the US Government, which says that they need him to "do something about Banner". Then, we go to a jungle where Banner is doing experiments on animals, like in THE ISLAND OF DR. MOREAU. Which means that the Hulk/Banner personas have been physically split into two separate beings. I would rather have just had read this.