The Order

From Doom Wiki

The Order is an evil group in Strife whose members heard the voice of a malignant god in their heads after being infected by a disease from a comet. The Order's soldiers revolve around cyborgs and robots with religiously oriented names. They have made slaves out of the men of those who do not believe in their god, and have taken the women and children of many families, usually destroying them. Their god is the Entity, and the comet may have been an alien craft that crash landed. The Front is the rebellion that works to stop The Order's forces.