Az is a term that can refer to various subjects, but it is often associated with the character Azrael from comic books, particularly in the Batman series. Azrael is known as a vigilante who sometimes takes on the role of the Batman, showcasing a complex personality and moral code. In a different context, Az can also refer to the Aztec civilization, an ancient Mesoamerican culture known for its rich history, impressive architecture, and advanced agricultural practices. The Aztecs built the great city of Tenochtitlan and had a profound influence on the region's culture and society.