In the presence of the Astartes, most people feel a combination of awe and fear, and many cultures on the more primitive worlds simply worship them outright as demigods or angels of the God-Emperor made flesh. The Astartes are physically stronger, far more resilient and often mentally far removed from the lot of most normal human beings. They are the God-Emperor's Angels of Death, and they know no fear. Clad in ancient Power Armor and wielding the most potent weapons known to Man, the Space Marines are terrifying foes and their devotion to the Emperor and the Imperium of Man is unyielding. Space Marines are untouched by plague or any natural disease and can suffer wounds that would kill a lesser being several times over, and live to fight again. They are barely human at all, but instead superhuman having been made superior in all respects to a normal man by a harsh regime of genetic modification, psycho-conditioning and rigorous training. The Adeptus Astartes, better known as Space Marines, are foremost amongst the defenders of humanity, the greatest of the Emperor of Mankind's warriors.