Quetzalcoatl was, as his name indicates, a feathered serpent, a flying reptile (much like a dragon), who was a boundary maker (and transgressor) between earth and sky. He was also a creator deity having contributed essentially to the creation of Mankind. He also had anthropomorphic forms, for example in his aspects as Ehecatl the wind god. Among the Aztecs the name Quetzalcoatl was also a priestly title, as the most two important priests of the Aztec Templo Mayor were called "Quetzalcoatl Tlamacazqui". In the Aztec ritual calendar, different deities were associated with the cycle of year names: Quetzalcoatl was tied to the year Ce Acatl (One Reed), which correlates to the year 1519
I've always been fond of Mayan and Aztec mythology. Quetzalcoatl's one of my favourite gods, same with Tezcatlipoca. I can't explain it but mebbe it's the whole "Whoo awesome feathered dragon" thing. XD;; so much so that I associate my favourite OC, Skye, to Quezzie.