Athena has long hair and intense grey eyes, as described when Percy sees her, and nearly mistakes her for Annabeth. As she is a goddess, she can turn to any form she would like so she will not always look like that. As shown in The Titan's Curse, she is shown as an average looking Park Ranger at the Hoover Dam. She is said to be beautiful and lean. She wears an elegant white dress. It is said Annabeth looks a lot like her mother, and has the same cold stare. In some myths she is said to be able to turn into a white owl. In the Titan's Curse she is seen with black hair. She is also said to be one of the most beautiful goddesses since many men fawn over her but she uses her powers to do horrible things to them if they do not leave on her first warning. She gets along with Artemis well, being seen having similar personalities and often conduct conversations.
1. She presumably possesses the standard powers of a goddess
2. She can shape shift into an owl. It is unknown if she can turn into other animals also
3. She is an expert in all areas of warfare and weapons
4. She is a skilled tactician (greater than Ares)
5. She is very wise, intelligent, and knowledgeable
6. She has great intellect
7. She may have the gift of prophecy, as one of her symbols is the snake which can grant psychic powers
8. She can conjure and use any kind of weapon
9. She is the only one Zeus trusts enough to wield Aegis and the Master Bolt
10. She has a thirst for knowledge which makes her achieve more
Athena can be very sympathetic: once, a man saw her bathing, She blinded him, then sent snakes to protect him and gave him supernatural powers to see the future, amongst other things.
Athena is a very disciplined, quick thinking, and wise woman. She is very brilliant and always takes precautions before acting. Percy notes in The Titan's Curse that Athena might be the worst enemy someone could make, even among the gods, as she would never give up or make a rash mistake simply because she hated you. She loves all of her demigod children, and seems to be a caring mother. She is the only known god who claims her children at birth. She gave her daughter Annabeth the gift of a cap that turns the wearer invisible. In one of Percy's dreams in The Battle of the Labyrinth, she is shown to have blessed both Daedelus and his young nephew Perdix. She later punishes Daedelus for killing Perdix by branding him with a partridge (the mark of a murderer).
Athena is also usually kind to other demigods. She often aids heroes on their quests, even helping Percy at one point while he was in the Hoover Dam. Athena is somewhat cold and calculating at times. She voted against letting Percy live in The Titan's Curse, because she didn't want to risk him staying alive. Athena is also known for never giving up, and crossing her is a mistake. When Paris picked Aphrodite as the most beautiful goddess instead of her, Athena took the side of the Greeks in the Trojan War and used every power within her to bring him down. In the book, Athena is seen as a strict and proud Goddess. In The Lightning Thief (Movie), she is less strict and didn't show any sign of not liking Poseidon or Percy. She even states that "War is not the answer". This is perhaps a little paradoxical, as she is the goddess of war strategies. However being the goddess of strategy, she knew that a war between the gods was not the answer and would only lead to unneeded sacrifice.
She cares a lot for her children, and does not show any favoritism. Since she claims them at birth, protects them on their adventures and give many gifts to them, they don't easily die and usually die of old age rather than murder.