(Thank you, Rick Riordan)
Zeus, Hera, Poseidon, (Hades), Apollo, Artemis, Athena, Dionysus, Aphrodite, Demeter, Ares, Hephaestus, Hermes
Extras:
Hades
Persephone
Hestia
WLIU, name all the Roman counterparts for the twelve members of the original Greek Olympian Pantheon