In Greek and Roman mythology, Apollo (in Greek, Ἀπόλλων–Apóllōn or Ἀπέλλων–Apellōn), is one of the most important and many-sided of the Olympian deities. The ideal of the kouros (a beardless youth), Apollo has been variously recognized as a god of light and the sun; truth and prophecy; archery; medicine and healing; music, poetry, and the arts; and more. Apollo is the son of Zeus and Leto, and has a twin sister, the chaste huntress Artemis.