Banner devised a plan to storm the Hellcarrier in a two-pronged attack to throw the Intelligencia off balance. He was to take Skaar, and a few others including A-Bomb, to rescue the prisoners while Red Hulk was to ensure the Intelligencia's plan failed by destroying the equipment vital to its success.
Red Hulk was expected and the Intelligencia commanded the Gammadroid and Cosmic Hulk to take him down. Instead of preventing his former allies from unleashing their master stroke, Red Hulk became a part of it as they siphoned off much of his energy to create an army of Hulks. He brought Deadpool as his backup plan, who saved him before they completely drained him, but Deadpool was bathed in a gamma bath transforming him into Hulkpool. To make matters worse, several others of Earth’s heroes that accompanied Red Hulk were also turned into "Hulked-Out" versions of themselves.
Just as Hulk hated his alter-ego of Banner, Hulkpool despised Deadpool and wanted to kill him. Hulkpool found his old friend, Bob, to aid him in his mad quest, and they traveled to a time machine stolen from Doctor Doom by Red Hulk and Thundra. Knowing better than to argue with an individual who could crush him into nothing, Bob operated the machinery while Hulkpool surfed the timestream in search of his prey. Bob was unfamiliar with the equipment and Hulkpool was sent on various adventures before finding Deadpool, creating an alternate universe. He did fulfill his desire and killed the Deadpool within this universe, and Bob brought him back to his own time. Hulkpool left Bob to find the Red Hulk, but it can be assumed when Banner siphoned off the gamma radiation used to create the army of Hulks, Hulkpool was reverted back to Deadpool.