Doomans

The Doomans are the inhabatants of the Dark Empire of Doomingsland. This race of vile creatures is bred for war, and nothing else. Their homeworld, Doom, is a desolate, volcanic world, incapable of supporting life as we know it. The Doomans thrive under these conditions. Standing at an average height of seven feet tall, grey-skinned, humanoid Doomans are naturaly more than 50x stronger than a human due to gravitational conditions on their homeworld. They don't require much nourishment, nor do they require water. Rather than having more than 70% of their body consist of water as with humans, the Doomans are composed of a muddy, rock-like substance, also making them more prone to surviving kinetic energy weapons. They are capable of breathing air normaly toxic to humans due to the atmosphere of Doom, which also taints their eyes completely blood red.

The most horrifying aspect of the Doomans is the way they reproduce. Rather than engage in sexual activity, Doomans take living creatures and twist their DNA, transforming them from their former race into Doomans in a process known as conversion. What little that is known about this terrifying process is as follows:

The convert is taken by the Dooman Legionaries and given two choices: Convert, or die a slow, agonizing death at the hands of a xenomorph hive. Those who choose to save themselves and convert are taken into a vast chamber, and locked inside of a small pod. This pod then manipulates their DNA, slowly tearing away what was once another race, and changes it into the brutal being known as a Dooman. As this is going on, the mind of the unfortunate subject is warped and changed, filled with thoughts of Chaos and the Dark Side. When it is over, the convert is a fully functioning Dooman soldier.