Greyshock is a soldier working for the Constellar Federation on the planet Legin.
Greyshock's face is covered by goggles and a helmet. He wears full-armor, wearing a protection vest, camouflage t-shirt, kneepads, holsters, boots, gloves and shoulder pads.
In Chapter 5: Legend, Greyshock first appears when Romero presents Burden to the crew. Burden quickly becomes the group's leader, and Greyshock is loyal to his orders.
Greyshock can lead attacks on enemy bases or patrols. Depending on player choices, Greyshock can either make it alive to the base, die of fatigue or thirst, be kicked out of the group or be killed in action.