EARTH: Hulk is last human alive
Hulk, The End
A possible future of the Marvel-616 world. Large numbers of heroes were killed in the Hell on Earth War and then the rest of humanity was killed in a number of nuclear exchanges. The only surviving human being is Bruce Banner. He wanders North America with only a floating recording unit from an alien race as his companion. Occasionally, he is attacked by mutated insects, at which point he transforms into the Hulk and the insects feast on him despite his best efforts. Any time that Banner attempts to kill himself, the Hulk personality takes over in order to survive. Eventually, the Hulk becomes dominant all the time when Banner begins to die of a heart attack.