Zeus is the Greek god of honor, justice, lightning, rain and the skies. He is the King of Olympus, the son of the Titans Kronos and Rhea, and the husband of the goddess Hera. His Roman counterpart is Jupiter.

Hera is the Greek goddess of familial love, marriage, motherhood, and women. She is the elder sister and wife of Zeus, therefore making her Queen of Olympus. She is one of the daughters of Rhea and Kronos. Her Roman counterpart is Juno.

Poseidon is the Greek god of destruction, earthquakes, horses, hurricanes, oceans, seas, droughts, floods and storms. He is the son of the Titans, Kronos and Rhea, as well as one of the Big Three. His Roman counterpart is Neptune.

Demeter is the Greek goddess of the harvest and agriculture, who presided over grains, the fertility of the earth, the seasons, and the harvest. Demeter's Romancounterpart is Ceres.

Ares is the Greek god of war. His symbols include the boar, dog, wolf, spear, sword, and vulture. His Roman counterpart is Mars.

Athena is the Greek virgin goddess of wisdom, handicrafts, useful arts, and battle strategy. She is the daughter of Zeusand Metis, and her symbols include the owl, Aegis, the olive tree, and the snake. Her Roman counterpart is Minerva.

Apollo is the Greek god of the sun, light, healing, music, poetry, archery, reason and prophecy. He is the twin brother of the goddess Artemis. He is depicted as the god who drives the sun around in his chariot, a job he received when the original sun god, Helios, faded due to him being downsizedby the Romans. He and his sister, Artemis, are known as theTwin Archers.

Artemis is the Greek virgin goddess of the hunt, the Moon, chastity, animals, and the wilderness. She and her twin brother Apollo are known as the "Twin Archers." Artemis' handmaidens are known as theHunters of Artemis, a group of young women that have turned their back from the company of men and have pledged themselves to the goddess. HerRoman counterpart is Diana.

Hephaestus is the Greek god of forges, fire, technology, craftsmen, sculptors, volcanoes, and blacksmiths. His symbols are the ax, an anvil, a pair of tongs, hammer, and fire. His Roman counterpart is Vulcan.

Aphrodite is the Greek goddess of beauty, love, lust, desire, sexuality, and pleasure. Her Roman counterpart is Venus.

Hermes is the Greek god of roads, speed, messengers, commerce, travel, thieves, merchants, athletes, and mail deliverers. His Roman counterpart is Mercury. His symbol is the Caduceus.

Dionysus is the Greek god of grape-harvest, wine, madness, parties, and ecstasy as well as theater. He is also known as Mr. D, the camp director of Camp Half-Blood. He was placed as the director by his father Zeus as punishment for chasing after an off-limits nymph. After the decree that Olympus would be closed and that gods would have no contact with their demigod child, he was recalled to Olympus. His Roman counterpart is Bacchus.

Hades is the Greek god of the Underworld, wealth, and the Lord of the Dead. One of the Big Three gods, his wife isPersephone. Hades' Roman counterpart is Pluto.

Iris is the goddess of the Rainbow. She delivers Iris Messages for gods, goddesses, and if asked nicely, and she's not too busy, for demigods. Interestingly, her affiliation is unknown, as she has been known to deliver messages for both gods, demigods, and Titans. It is possible that she was neutral in the Second Titan War because she was too busy carrying messages, as she wasn't among the many minor gods and goddesses who had switched over to Kronos' side. Her Roman counterpart is Arcus.

Hypnos (meaning "sleep") is the Greek god of sleep. He is the son of Nyx and Erebus. His Roman counterpart isSomnus. Hypnos is where the words "hypnotism" and "hypnosis" are derived from. Somnus is where the medical term for sleepwalking, somnambulism, is derived from. Hypnos was very cheeky and mischievous as a child, putting people to sleep at serious moments.

Nemesis is the Greek goddess of balance, justice, retribution, and vengeance. Her Roman counterpart is also called Nemesis for revenge does not change from Greek to Roman myths, as revenge is universal, though she may also be equated with Invidia.

Nike is the Greek goddess of Victory and is described as the daughter of the Titans Pallas and Styx as well as the sister of Kratos (Power), Bia (Force), and Zelus (Zeal). She assumes the role of the divine Charioteer, a role in which she is often portrayed in Classical Greek art. Her Roman counterpart is Victoria, which is Latin for "victory".

Hebe is the Greek goddess of youth. She was also the former cupbearer of the gods. Her Roman counterpart is Juventas.

Tyche is the Greek goddess of luck and chance, whose Roman counterpart is Fortuna. She was sometimes regarded as a fourth Fate, but not legitimately so. She is commonly represented with the Cornucopia and the wheel of chance.

Hecate is the daughter of the Titans Perses and Asteria. She is the Greek goddess of magic, sorcery, witchcraft, crossroads, trivial knowledge, and necromancy. Her Roman counterpart is Trivia.