In Greek mythology, there are 12 Olympian gods and countless other minor gods. In Percy Jackson and the Olympians, all of the Olympians play a role, and many lesser gods as well.
The 12 Olympian gods are Zeus, Hera, Poseidon, Demeter, Ares, Athena, Apollo, Artemis, Hephaestus, Aphrodite, Hermes, and Dionysus. These gods all have a regular seat at Mount Olympus and a cabin at Camp Half-Blood.
After The Last Olympian, the final book in the Percy Jackson and the Olympians series, Annabeth Chase designs 8 more cabins at Camp Half-Blood for the children of minor gods including Hades, Iris, Nemesis, Nike, Hebe, Tyche, and Hecate. The children of these minor gods, besides Hades, are very minor characters. All of the gods besides Hera, Artemis, and Hestia have demigod children. Below are profiles on the most important gods in the series—and their demigod children!
Zeus - credits:matintheworld/depositphotos
King of the gods, god of the sky, thunder, lightning, and justice
Roman counterpart: Jupiter
Symbol: Lightning Bolt
Archaeological Site: Temple of Zeus in Ancient Olympia—one of the 7 Wonders of the Ancient World
Notable Children: Thalia Grace and Jason Grace (Jupiter)
Thalia Grace is one of the main characters of Percy Jackson and the Olympians. She is portrayed as stubborn and short-tempered, but also determined and a good leader. Thalia can conjure up lightning bolts and has some control over the weather. She joins the Hunters of Artemis in The Titan’s Curse and becomes Artemis’s lieutenant.
Jason Grace is one of the seven demigods of The Great Prophecy in The Heroes of Olympus. He is the son of Zeus’s Roman form, Jupiter. In the series, Jupiter is portrayed as a more level-headed and rational version of Zeus, and Jason has these same attributes. Like Thalia, Jason can conjure lightning bolts and control the weather. He can also conjure wind spirits and fly. Along with Thalia, he is a strong leader.
God of the sea, horses, earthquakes
Roman counterpart: Neptune
Archaeological Site: Temple of Poseidon at Cape Sounion
Notable Children: Percy Jackson
Percy Jackson, the title character for the series, is certainly an important character. As a son of one of the “Big Three” gods, he is very powerful, maybe the most powerful in the series. He can talk to horses and sea animals, control all aspects of water, and summon water. Percy is instrumental in saving the world from Kronos in the first series and Gaea in the second. One of his main attributes is his loyalty to his friends.