Jack, son of Khione, but is otherwise known as Jack Frost, Guardian of Fun and Joy. Originally, Jack was a pooka, from the planet Xyopa. He's actually a demigod because, about five million years ago, Khione came to Xyopa and had a child with the chief of the Winter pookas. Jack, his older sister, Halonriuslicarotfiert (who is actually his cousin), and his younger brother and sister, Adonis and Amine to Earth because Xyopa was destroyed by Kosmotis and the fearlings. In the year that Estelle was born, the three siblings and their cousin (they didn't know that she's their cousin though) went to camp. Percy wasn't there that year because he was in New Rome.
