An Aztec ruler, known as a tlatoani, was the supreme leader of the Aztec Empire. This position was often hereditary, passed down through noble families. The tlatoani held significant power, overseeing military, political, and religious matters. They were considered representatives of the gods and were responsible for maintaining order and prosperity in their society. The most famous Aztec ruler was Moctezuma II, who reigned from 1502 to 1520. Under his leadership, the empire expanded significantly, and he was known for his wealth and elaborate ceremonies. The tlatoani played a crucial role in the empire's complex social structure and its interactions with neighboring cultures.