Zeus

In mythology: In Greek mythology Zeus was the God of the sky and the king of Olympus. He was married to his sister Hera and brother of Poseidon and Hades. He is also the son of the Titan lord Kronos who he had overthrown. He is also the father of other well known Greek legends such as Ares, Hercules, and Perseus.

In the book: In the series Zeus is not a major player in Percy's life after the first book. In the first book his lightning bolt was stolen causing Percy to discover that he was a demigod. He is not featured until the final book in the series where he offers Percy the chance to become a God for his success at saving Olympus, which he refuses.

If you want to learn more about Zeus please go to this link www.greekmythology.com/Olympians/Zeus/zeus.html