Δία, known as Zeus in Roman mythology, is the king of the gods in ancient Greek religion. He is the god of the sky, lightning, and thunder, often depicted holding a thunderbolt. Δία is the son of Cronus and Rhea and is known for his role in leading the Olympian gods against the Titans. Δία is associated with law, order, and justice, often serving as a protector of guests and strangers. His symbols include the eagle and the oak tree. Temples dedicated to Δία, such as the famous Temple of Zeus at Olympia, were significant in ancient Greek culture and religion.