 The Orphics in particular believed that Zeus and Hades were the same deity and portrayed them as such.Zeus was portrayed as having an incarnation in the underworld identifying him as literally being Hades and leading to Zeus and Hades essentially being two representations and different facets of the same god and extended divine power.The Orphic Hymn to Melinoë also references this by mentioning that Persephone was impregnated upon the bed of Zeus Kronion in the Underworld by the River Cocytus.