Original: The classical scheme of the Twelve Olympians ( the Canonical Twelve of art and poetry ) comprises the following gods : Zeus , Hera , Poseidon , Demeter , Ares , Hermes , Hephaestus , Aphrodite , Athena , Apollo , Artemis , Hestia .
Simplified: Zeus , Hera , Poseidon , Ares , Hermes , Hephaestus , Aphrodite , Athena , Apollo , and Artemis are always considered to be Olympians .