Introduced in: Ultimate Fantastic Four #21 (2005)

In this gory universe, a virus has infected most of humanity turning them into zombies (though they kept their intelligence). The zombie heroes and villain began eating everything they could leading to a food scare until the Silver Surfer and later Galactus arrived. The Zombies devoured them, absorbed their power, and began to travel across not only their own universe but also other universes to find life to devourer. (NOTE: though the episode was inspired by this series, the What If…? series has little to do with his universe.)