One of the major Avengers: Doomsday concept art is that of a village full of Hulks. In their Hulk form, Bruce Banner and his cousin Jennifer Walters interact with a long-haired Hulking figure. In the background, we can see a mysterious fortification wall, if the comics are to be followed, is just the Fantastic Four's Ben Grimm/The Thing.

Doomsday concept art has leaked revealing Doctor Doom, a new Black Panther, and plenty of returning characters.