and goddesses are worshiped, for example: Zeus, Hera, Ares, Poseidon, Aphrodite, Demeter, Apollo, Artemis, Hermes, Athena, Hefestus, Hades, Helios, etc. Primal Chaos In Ancient Greek cosmology , Chaos was the first couple of things to exist and the womb from which everything emerged. For Hesiod and the Olympian mythos , Chaos