<Li> Kronos - The former king of the Titans, bent on restoring his rule and taking revenge on the gods who deposed him . </Li> <Li> Annabeth Chase - Daughter of Athena, Percy's close friend, and an aspiring architect . </Li> <Li> Ethan Nakamura - An ally of Kronos and son of Nemesis, without whom Kronos's rise to power would not have been possible . Like Luke, he too feels betrayed by the Greek gods for their refusal to awknowledge his mother as a goddess equal in importance to the twelve Olympians . </Li> <Li> Grover Underwood - Percy's best friend, a satyr, and a new member of the Council of Cloven Elders . He is also a kind of ambassador for the power of the god Pan in the world . </Li>

What happens in percy jackson and the last olympian