Quetzalcoatl is a prominent deity in Mesoamerican cultures, particularly among the Aztecs and the Toltecs. Often depicted as a feathered serpent, he represents wind, air, and learning, and is associated with creation, fertility, and the arts. Quetzalcoatl is also linked to the planet Venus and is considered a cultural hero who contributed to the development of civilization. His mythology includes themes of duality, wisdom, and the quest for knowledge.