Athena

Athena is the goddess of wisdom and she is also the disciplined side of war. She is very brilliant and always takes precautions before acting. She has black hair and gray eyes. She has many demigod children, one of the most well-known being Annabeth Chase. Like Zeus, her children are born from her head. She once talked to Percy at Hoover Dam during the events in The Titan's Curse. Her father is Zeus and her mother is Metis, a Titan. Athena seems to not like her daughter’s relationship with Percy and in the Last Olympian her message that she sends through the messenger of the gods Hermes tells Percy "to stay away from her daughter." This is probably due to her hatred to Poseidon Though, in The Titan's Curse she told Percy that though she didn't like him, she told him his fatal flaw, so that if he was aware of it, he could overcome it.

Athena seems to truly love her demi-god children, which may be one of the (minor) reasons as to why she doesn't like Percy's relationship with Annabeth, she doesn't think a son of Poseidon is good enough for her daughter.

Rivalry with Arachne
A long time ago, the goddess Arachne challenged Athena to see who could make the best tapestry. Athena accepted the challenge, the two both made a tapestry, Athena's was of the Gods punishing mortals for being to full of pride. Arachne's showed the Gods having fun and enjoying themselves. Arachne's was better so Athena destroyed it and turned Arachne into a spider (supposedly after Arachne tried to kill herself). Ironically she could still use the web from her spinnerets to make silk. Ever since then Athena's children have had a fear of spiders, paranoid that every spider they see is out to get them, as what better way would there be for Arachne to get revenge on Athena, then to kill her Children.

Rivalry with Poseidon
For many eons, Athena and Poseidon have had rivalry between them. It all started when they competed for being the patron of the city Athens. The leader of the city told the two gods to make a gift for the newly constructed city. Poseidon made a salt-water spring, while Athena, gifted them the Olive Tree. Seeing that the Olive tree was much better than a Salt-Water Spring, The leader of the newly constructed city named it after Athena (Hence the name Athens) and made Athena a temple known as the Parthenon, and also made her the Patron of the city. Also, Athena once caught Poseidon with his girlfriend Medusa (who was once a pretty maiden) " ". Furious at Poseidon and Medusa for doing such disgusting acts in her temple, she turned Medusa and her sisters into the "Three Gorgons". Medusa's sister's were also turned because they helped Medusa get into the temple. The competition for Athens and the terrible acts Poseidon committed to in Athena's temple are probably the basis for why Athena dislikes Percy.

Children

 * Annabeth
 * Malcom
 * Many other blonde, gray eyed demigod children.

Film
In the upcoming film, The Lightning Thief, Athena will be played by Melina Kanakaredes.