DOOM - Cataclysm DLC - Demon Carcass

In the Multiplayer DLC map, Cataclysm, there was a space station side and hell side which you can traverse between via various portals. On the hell side there was a massive dead demon which has a portal in his chest. These sketches became the basis for a badass dead demon that Bryan Wynia sculpted for the final level.

In comparison, here a few concepts from the other side of the portals: https://www.artstation.com/artwork/3QGo2

http://doom.com/
© id Software, LLC, A Zenimax Media Company