Ancient myths from Greek mythology served several functions including explaining natural phenomena, expressing beliefs about morality, and entertaining audiences. Myths often featured gods and goddesses with human traits and human heroes with supernatural abilities. The document provides a brief overview of 12 major Greek gods and goddesses including Zeus, Hera, Athena, Poseidon, Hades, Demeter, Artemis, Apollo, Hermes, Hephaestus, Ares, and Aphrodite along with their domains, Roman names, and symbols.