An unidentified blue-colored anatomical component is seen when its head or extremities are damaged. When killed with a headshot, the creature's green-colored brain matter can be seen going airborne, leaving roughly half of its cranium exposed. The alien's skin is a pale yellowish-green hue with dark splotches scattered about. The alien has a large head that features two pitch-black eyes, pointed ears, a flat nose with two nostrils and a mouth with nine-pointed teeth. It possesses four limbs: two arms which end in three-fingered hands with opposable (or at least prehensile) thumbs and two legs whose digits cannot yet be discerned. The alien appears as a humanoid creature roughly the height of an average human.
Elements of the zetan's skull are exposed following severe head trauma.
