Warning: Contains Spoilers for Planet Hulk and World War Hulk

There is no doubt that Marvels most powerful immortal is the Hulk. His connection to the One Below All grants him a version of immortal life, and he can adapt to nearly any situation. Thanks to Bruce Banners dissociative identity disorder, there are multiple identities of Hulks that live within the scientist's mind, some more ruthless than others. Despite these facts, he is consistently underestimated by his supposed allies.

Prior to the world-shattering event that introduced the Hulks strongest alter, the seeds of Earths destruction were sewn during the Planet Hulk series. After a gamma bomb induced a mindless rampage from the Hulk, the Illuminati sent Bruce Banner off-world.

While he was supposed to land on an isolated yet luscious planet, the Hulk rampaged within the craft, resulting in a crash landing on Planet Sakaar, a combative planet ruled by a Roman-esque empire.