Zeus was king of the gods. He threw thunderbolts to punish anyone who disobeyed him. His brother Poseidon was god of the sea. Another brother Hades ruled the underworld. Zeus had many children among them Apollo, Artemis, Athena and Ares. Apollo was the sun god, and the god of the arts, medicine, music and poetry. His twin sister Artemis was goddess of the moon, and goddess of childbirth, and of all natural things. She is often shown as a hunter with a bow and arrow. Athena was goddess of wisdom, and of crafts such as spinning, weaving and pottery. Ares was the bad-tempered god of war not even his own father liked him!