Gallu

The Gallu are demons of ancient Mesopotamian tradition, attested in Sumerian and Akkadian texts from the third and second millennia BCE and associated above all with the underworld ruled by the goddess Ereshkigal. They appear across a wide span of cuneiform literature, from mythic narrative poetry to incantations and exorcism texts, and are among the best-documented classes of demon in the region's surviving religious writing.

In the poem "Inanna's Descent to the Underworld" (and its Akkadian counterpart, "Ishtar's Descent"), a troop of Gallu demons is dispatched from the netherworld to seize a substitute for the goddess Inanna after she is released from the land of the dead. The Gallu are depicted as relentless and without pity: they do not eat bread, drink water, accept flour or libation offerings, take a wife from a husband's embrace, or take a child from a nurse's arms, being wholly indifferent to the ordinary bonds and comforts that might move a human or even another god. Finding Inanna's consort Dumuzid enthroned and unmourning in her absence, the Gallu seize him in her place and drag him down to the underworld, an episode that stands as one of the most famous scenes of loss and substitution in Mesopotamian myth.

Beyond this central myth, the Gallu recur throughout Mesopotamian demonology as a general class of underworld spirit or agent of death, invoked in incantations and apotropaic rituals meant to ward off illness and misfortune attributed to them. In some tellings they are described as numerous, faceless, and interchangeable rather than as individuated figures, functioning more like a supernatural bailiff-troop that carries out Ereshkigal's judgments than as trickster or monstrous antagonists in their own right. Their power lies less in physical combat than in an inexorable authority to seize and to hold: once dispatched, no bribe, plea, or offering is recorded as successfully turning them back, and protective magic against them focuses on prevention and ritual substitution rather than direct confrontation.

The paragraphs below are extrapolated; no source supports them.

Read against their myth, the Gallu behave less like individual monsters and more like an extension of underworld law given legs: their few attested actions are all executions of an order already handed down, with no sign of independent scheming, negotiation, or mercy. Their refusal of food, drink, and human pleading marks them as fundamentally outside ordinary social and emotional exchange, entities for whom persuasion has no purchase because they were never built to want anything but the completion of their task. This suggests a being of narrow but absolute focus, emotionally flat and socially indifferent by design, whose only real "relationship" is a chain of command running back to Ereshkigal. Their formlessness in the sources, more office than individual, further implies a creature whose identity is defined by function and role rather than by personality, making them a kind of pure enforcement mechanism given mythic shape.