Ammet was a marid of the seventh level in the service of Khaba the Cruel. First meeting each other when Khaba was very young, Ammet grew to love Khaba, much to the disgust of his fellow spirits, often hurting himself for the benefit of his master. Ammet's prefered guise is an exact replication of Khaba's shadow, although it is always dark and long no matter what time of day it is. Ammet was last sighted being corked into a small wine flask by Uraziel , the great Spirit of the Ring.
In Egyptian mythology, Ammet is a beast of the Underworld that would eat villains and robbers' bad hearts.