This description mostly glosses over what the udug actually looks like, instead focusing more on its fearsome supernatural abilities.[1] All the characteristics ascribed to the "evil udug" here are common features that are frequently attributed all different kinds of ancient Mesopotamian demons: a dark shadow, absence of light surrounding it, poison, and a deafening voice.[1] Other descriptions of the udug are not consistent with this one and often contradict it.[13] Konstantopoulos notes that "the udug is defined by what it is not: the demon is nameless and formless, even in its early appearances."[1] An incantation from the Old Babylonian Period (c.