List of Characters in The Percy Jackson and The Olympians Series and In The Heroes of Olympus Series - Titans

Titans

• Aigaios: The Titan of sea storms. Aigaios is a partner of Oceanus who assists in the Titans' war against Poseidon. In The Titan's Curse, Tyson reports that Aigaios protected the Princess Andromeda (a cruise ship carrying a Titan army) from Poseidon.

• Atlas: The general of the Titan army. He is the father of Calypso, Zoë Nightshade, and the Hesperides. Atlas was imprisoned on a mountaintop in San Francisco, forever cursed to hold up the sky. He served as the primary antagonist in The Titan's Curse, when Kronos's forces captured Artemis and forced her to take his place. Percy helps Artemis subdue him and force him back into his previous duty. In The Last Olympian, Atlas was referenced by Kronos, who decides not to free Atlas from his duty and has Krios watch over him.

• Hyperion: The Titan of burning light and Lord of the East. Hyperion is the father of Helios and Selene, the Titans of the sun and moon, respectively. He appears in The Last Olympian, where he is clad in full golden armor and battles Percy. The satyrs come to Percy's aid and trap Hyperion in a tree trunk.

• Iapetus: The Titan of mortality, pain, and death. In The Demigod Files, Percy drags Iapetus into the river Lethe, erasing the Titan's memory. Nico subsequently attempts to train Iapetus, who is told his name is Bob.

• Krios: The Titan of stars and the constellations, and lord of the South. Percy sees Krios in a dream where he guards Atlas. He wears armor decorated with glowing stars. In The Lost Hero, Jason claims to have defeated Krios with some luck.

• Kronos/Saturn: The lord of the Titans and the Titan of time and agriculture. Kronos is the main antagonist of the Percy Jackson & the Olympians series. He is the father of Zeus, Hades, Hera, Demeter, Hestia, and Chiron; he is also the father of Poseidon, and thus the grandfather of Percy, whom he tempts to join the Titan army. He fights with a scythe with a six-foot-long magical blade that can harm both gods and mortals. During the series, Kronos is initially trapped in Tartarus, but he eventually escapes to the point where he can possess Luke's body. In this form, he leads the Titan army against Olympus while Typhon occupies the Olympians' attention. On Olympus, Luke's betrayal allows Percy and Annabeth to destroy him, as Luke strikes his vulnerable part to expel Kronos' spirit from his body.

• Oceanus: The Titan of the ocean. Oceanus is depicted as having the upper body of a muscular man with a long beard and horns and the lower body of a serpent. He did not fight the Olympians in the Titanomachy. But in The Last Olympian, he becomes convinced Kronos will be able to defeat Olympus. Oceanus joins the other Titans in the war, assaulting Poseidon's forces underwater. After the defeat of Kronos, Oceanus escapes back to the depths of the ocean.

• Prometheus: The Titan of forethought. Like Oceanus, Prometheus prefers to fight for the more powerful side. He supported the Olympians in the Titanomachy, but joins the Titan army in the Percy Jackson & the Olympians series because he had a foresight that the Titans would win. Prometheus was part of the truce party that Percy Jackson was in. He flees after Kronos's defeat, sending a list of excuses for siding with Kronos to Olympus.