Helghast

Lit. translation (Dutch): "Guys from Hell"/"Men from Hell" A mutated subspecies of humans that live in the Alpha Centauri system, primarily on the planet Helghan. Due to its highly inhospitable conditions, the Helghast have adapted, becoming physically stronger and wearing gas masks nearly all the time. The Helghast are the main antagonists of the sci-fi FPS Killzone, though the lore of Killzone and the events throughout the series paints a far different picture.