Hera

In mythology: In Greek mythology Hera was the Goddess of women and marriage as well as the queen of Olympus. She is the sister of her husband Zeus and mother of many of the Gods such as Ares and Hephaestus. She is most well known for her involvement in the Trojan War as well as giving Hercules his twelve labors for being Zeus's son.

In the book: In the book she is a very minor character only being involved in Percy's life by hating him and Annabeth. And by telling Annabeth in the Labyrinth that she has to make a big choice soon.

To learn more about Hera go to this link www.greekmythology.com/Olympians/Hera/hera.html

                                         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