Bimbaros

Porter to the Underworld.
 * His name appears in Lunar documents.
 * He let mortals enter the Underworld, but hang the souls (which trying to escape) to adamant nails.
 * He failed to stop Eurmal and Vivamort escaping with Death.
 * Another failure was when the Red Goddess escaped from the Underworld.

Sources: Cult Compendium, Wyrms Footprints