A stray kitten that found it's way to Camp Half-Blood. She soon found Elysine and Sorin, and Elysine adopted it as the cabin pet.
Hemera has a fondness for the kids in the Nyx cabin, especially Elysine Aenar. She also likes to snuggle with kids when she's tired. Strangely, when she snuggles with someone, often the person holding her gets tired as well. Other than that she acts like a normal cute kitten.