Quetzalcoatl - Aztec serpent god.

Quetzalcoatl is often referred to as The Feathered Serpent and was connected to the planet Venus. He was also the patron god of the Aztec priesthood, of learning and knowledge.[2] Today Quetzalcoatl is arguably the best known Aztec deity, and is often thought to have been the principal Aztec god. Quetzalcoatl was called "Ipalnemohuani", a title reserved for the gods directly involved in the creation, which means "by whom we live". He was known as the inventor of books and the calendar, the giver of maize (corn) to mankind, and sometimes as a symbol of death and resurrection. Quetzalcoatl was also the patron of the priests and the title of the Aztec high priest.
Quetzalcoatl allegedly went to Mictlan, the underworld, and created fifth-world mankind from the bones of the previous races (with the help of Chihuacoatl), using his own blood, from a wound in his penis, to imbue the bones with new life.
His birth, along with his twin Xolotl, was unusual; it was a virgin birth, to the goddess Coatlicue. Alternatively, he was a son of Xochiquetzal and Mixcoatl.