Thalia Grace

"I'm honoring a friend. I must join the hunt, Percy. I haven't known peace since...since Half-Blood Hill. I finally feel like I have a home. But you're a hero. You will be the one of the prophecy."

Facts
Demigod

Daughter of Zeus

Lieutenant of Artemis

Gender: Female

Age: 15 (Immortal and forever young)

Background
History: Thalia and Luke Castellean ran away from two seperate homes, and together they ran across the country fighting monsters. Eventually they found Annabeth Chase, and eventually they ran to Camp Half-Blood. Thalia gave her life for her friends who ran on ahead while she fought a hord of monsters. But the gods taking pity on her, turned her soul into the the tree that resides on Camp Half-Blood Hill.

Sea Of Monsters: At the very end of the Sea of Monsters Thalia makes her debute. With the Golden Fleece returned, it healed more than the restoration of the tree, it also released Thalia, who would forever be a main character of the series.

Titan's Curse: Thalia is a main character in the third book. She leads the quest to take on the Titan Atlas. She is believed to be the demigod that the ultimate prophecy resolves around, but in the end, she insteads joins the Hunters of Artemis.

The Last Olympian: Thalia returns for the final battle, where she and her hunters help the fight on Olympus alongside Percy and friends.

The Lost Hero: It is revealed in the Lost Hero main character Jason Grace is actually Thalia's little brother, who had been missing since he was a child. The two reunite, and she makes an appearance alongside her hunters.