Herman Hulst of Guerrilla Games has recently described that the Helghasts have a human side of them but view themselves as the superior being and this will focused on being told through the story of Killzone. “Although the Helghast are physically still human, they consider themselves superior to the human race in terms of society and culture.”
“They possess a mentality that’s similar to how the Nazis viewed those not part of the Aryan bloodline. Helghast look down on humans as weak, lying, and spineless. In Killzone 3, we show that even the Helghast have some humanity left in them. We’re weaving a story that has more shades of grey than the trite representation of ‘good vs. evil’… We explore the notion that even honourable soldiers have to make debatable decisions at times for the greater good — or simply for their own survival.” explained Hulst.