
Called Hell Knights by Earth's resistance, these demons are particularly hefty and brutish. After Earth's invasion, a new breed of demons made themselves known. Though former humans, Imps and Pinkies have been found to be relatively easy to dispatch with enough firepower, many demons proved to be a lot more durable and powerful.

Earth would no go down without a fight however. Shortly after the Lone Marine's arrival on Earth, the resistance had left the planet in hopes of rebuilding mankind on another off-world colony. Earth had never looked so different, desolate and destroyed, littered with artifacts and evidence of Demonic influence and transformation. Making contact with resistance forces on Earth, the Marine was told of a subsequent invasion, that the Earth itself had been overrun with Hell's legions of demons. A Lone Marine was said to have wiped out the demon population on Phobos single-handedly, and ventured into the Hell-Gate to find what had become of Deimos, eventually finding that the moon was suspended over Hell itself.


UAC's attempts to locate the lost moon proved to be an exercise in futility, and baffled the research crew endlessly. Deimos was literally nowhere to be seen after the numerous attempts at contact yielded no results, as if it had never existed in the first place.
