The Grey is a thin humanoid, child-sized, with gray skin, long and slender limbs, and accordion-like heads with small mouths, an almost invisible nose, and excessively large black eyes that show little emotion. Their hands and feet resemble those of a human but are smaller and more delicate. According to reports, the flesh of the Greys is soft like rubber and does not divide into individual units, while they bleed black blood. The Greys have a strange odor, which means small animals, such as squirrels, can function as early warning systems against them.