An amnizu is a short, stocky winged guardian of the gates of the Nine Hells. Also known as the Styx devil. Controlling legions of lesser devils, they ensure that none can pass into the plane through the River Styx without answering to them.
Although the amnizu caste is considered greater in status than that of the horned devils, amnizu are required to be “demoted” to serve as horned devils before they can ascend any higher in the devil hierarchy. This is because the amnizu are dominated by Prince Levistus, and often serve his wishes rather than those of the Dark Eight.