Apollo and Ares, Gods of Art and War 
Aphrodite, Goddess of Beauty and Love 
Artemis, Virgin Goddess of the Hunt and Twin Sister to Apollo 
Athena, Goddess of Wisdom
Demeter, Goddess of Fertility
Hera - the "Big Guys" boss as wife to Zeus. Queen of Olympus 
Hestia, Goddess of the Hearth
Iris, Goddess of the Rainbow
Persephone, Goddess of the Underworld, wife to Hades
Hades, God of the Underworld
Hephaestus, God of Fire and Metal work
Hermes, God of  Merchants
Poseiden, God of the Sea
Zeus  - God of Gods, the "Big Guy", Ruler of Olympus
Lay down and take a relaxing trip back home
The twelve great Gods and Goddesses, considered by most mythographers to be the ruling Pantheon, are (Gods) Zeus, Poseidon, Hephaestus, Hermes, Ares, and Apollo and (Goddesses) Hera, Athena, Artemis, Hestia, Aphrodite, and Demeter. Hades, although a brother to Zeus, did not frequent Olympus and, with Persephone and Hecate, remained mostly in his underworld empire and, therefore, was not considered one of the ruling deities.
Dionysos, God of Wine