Apollo is one of the most important and complex of the Olympian dieties in classical Greek and Roman religion and Greek and Roman myhtology. The national divinity of the Greeks, Apollo has been variously recognized as a god of music, truth and prophecy, healing, the sun and light, plague, poetry, and more. Apollo is the son of Zeus and Leto, and has a twin sister, the chaste huntress Artemis. Seen as the most beautiful god and the ideal of the kouros (a beardless, athletic youth), Apollo is considered to be the most Greek of all gods. Apollo is known in Greek-influenced Etruscan mythology as Apulu.