The Feathered Serpent is a prominent supernatural entity or deity, found in many Mesoamerican religions. It is still called Quetzalcoatl among the Aztecs, Kukulkan among the Yucatec Maya, and Q'uq'umatz and Tohil among the K'iche' Maya.
The double symbolism used by the Feathered Serpent is considered allegoric to the dual nature of the deity, where being feathered represents its divine nature or ability to fly to reach the skies and being a serpent represents its human nature or ability to creep on the ground among other animals of the Earth, a dualism very common in Mesoamerican deities.
The earliest representations of feathered serpents appear in the Olmec culture ( 1400–400 BC). The Olmec culture predates the Maya and the Aztec. This cultural enclave extended from the Gulf of Mexico to Nicaragua. Most surviving representations in Olmec art, such as at La Venta, and a painting in the Juxtlahuaca cave (see below), show the Feathered Serpent as a crested rattlesnake, sometimes with feathers covering the body and legs, and often in close proximity to humans. It is believed that Olmec supernatural entities such as the feathered serpent were the forerunners of many later Mesoamerican deities, although experts disagree on the feathered serpent's religious importance to the Olmec. H.B. Nicholson notes that as early as the Middle Formative (Preclassic) in the Olmec tradition, images of serpents with avian characteristics were often represented in several types of artifacts and monuments. This composite creature, who has been denominated the “Avian Serpent” and “Olmec God VII,” appears to constitute an earlier form of the later full-fledged Feathered Serpent, the rattlesnake covered with feathers, probably with at least some of the same celestial and fertility connotations.
The pantheon of the people of Teotihuacan (200 BC – 700 AD) also featured a feathered serpent, shown most prominently on the Temple of the Feathered Serpent (dated 150–200 AD). The pyramid was built southeast of the intersection of the avenue of the dead and the east-end avenue.