According to the lore, SCP-939 was being transported in a cargo crate, but the Chaos Insurgency and Class-D raid caused it to escape. It is located in the delivery sector inside Research Facility Site 19. In game, SCP-939 is portrayed as SCP-939-89 or SCP-939 Instance 89.
Prey is usually killed with a single bite to the cranium or neck. SCP-939 vocalizations often imply significant distress. SCP-939's primary method of luring prey is the imitation of human speech in the voices of prior victims, though imitation of other species and active nocturnal hunts have been documented. These spines may be up to 16 cm long and are believed to be sensitive to changes in air pressure and flow. Eye spots, sensitive to light and dark, run the length of their spined dorsal ridges. The jaws of SCP-939 are lined with red, faintly luminescent fang-like teeth, similar to those belonging to specimens of the genus Chauliodus, up to 6 cm in length, and encircled by heat-sensitive pit organs. Each of their four limbs end in three-fingered claws with a fourth, opposable digit. SCP-939 average 2.2 meters tall standing upright and weigh an average of 250 kg. The skins of SCP-939 are highly permeable to moisture and translucent red, owing to a compound chemically similar to haemoglobin. SCP-939 are endothermic, pack-based predators which display atrophy of various systems similar to troglobitic organisms.
