Lurkers are easily identified by their usually smooth head carapaces. Unlike the far more common Warrior caste which tend to employ direct assaults and swarm attacks, using sheer weight of numbers to overwhelm defences and subdue their prey, Lurkers prefer to keep their distance and lurk in the shadows, only attacking when the time is right. Lurkers tend to walk on all fours most of the time, although they have been known to stand on two legs when fleeing or attacking with their claws. Lurkers are dark in color, typically black but can switch to one of five new tones (Aureus, Inquinans, Caeruleus, Aeruginosus, Porhyreus). Their most distinguishing features are their smooth heads (although some Lurkers have a hole in the middle of their domes, exposing the spikes underneath) which can mutate into one of three new domes, the Cornigus, the Cristatus and the Cataphractus. Some Lurkers also have what resembles a human skull underneath their domes. Lurkers also have thinner Dorsal tubes than most Xenomorph castes, three fingers, green tinted shoulders and feet identical to that of a Warrior. Lurkers use their agility to outsmart prey. This form of attack requires a thin, spindly figure, which makes it trade brute force for overwhelming speed. Lurkers also have a stronger exoskeleton than Warriors giving them the ability to take more damage.