Quetzacoatl 

Aztec-Toltec Ruler of the Underworld

QUETZACOATL:  Quetzacoatl is the ruler of the Toltec-Aztec underworld, a place known as the "land where only the feathered serpent knows no fear."  The Aztecs (who inherited this CHTHONIC deity from the ancient Maya) had nine gods of the underworld, including the fearsome Quetzacoatl, a winged snake who lurks in the dark places of the dead.  He is the overlord of the gods as well as of all mortals, and his thirst for blood can be satisfied only with human sacrifices.  His kingdom includes the World of Shadows, a murky realm of bitter gloom.  He is associated with the number 7 and with the morning star (an affiliation that led Christian missionaries to connect Quetzacoatl with LUCIFER, referred to in religious texts as "son of the morning star").  (o)

Resource List - all entries are taken verbatim from the original source:

(o) "The Encyclopedia of Hell."  Miriam Van Scott.  St. Martin's Press.  ©1998