Katie Gardner

Katie Gardner is a demigod daughter of Demeter and no longer the head counselor for cabin four at Camp Half-Blood. Her little sister presumably took her position.

The Last Olympian
Katie makes her first appearance in The Last Olympian, a member of the Demeter cabin, and its counselor. She apparently knows Percy, Annabeth, and Grover well.

Katie rides on the strawberry trucks along with the rest of the campers from Camp Half Blood to the Empire State Building, and prepares to defend the city. During the battle she was ordered by Percy to take her cabin and defend the Brooklyn-Battery Tunnel. Later on when the fighting got closer to the Empire State Building she was heard yelling to hold their lines. At the end of the book, she reports to Olympus, telling Percy that she saw Rachel go out of the Empire State Building, unharmed.

Personality
Katie is very kind and patient, yet passionate and willing to risk her life for the gods. Katie is said to remind Percy of her mother, Demeter, by her bossiness and the way she argues. She dislikes the Stoll brothers (Connor and Travis) because they put chocolate Easter bunnies on her cabin's grass roof.



Powers
Katie has the ability to grow and manipulate plants, like all the other members of the Demeter cabin, and like their mother. She uses her abilities in the battle of Manhattan to grow a near-impenetrable wall of poison ivy and thorn bushes to halt the advances of many monsters. And they help to grow strawberries to help fund the camp.

Relationship with Campers
Katie gets along well with Percy, Annabeth, and Grover. She may be rather stern with everybody though, because her mother was mentioned to be rather stern. It is revealed in The Last Olympian that the Stoll brothers have somewhat of a rivalry with Katie, ever since they decorated the grass roof of her cabin with chocolate Easter bunnies as a prank.