Ava Grace Kolker is an American teen actress and singer. Kolker's roles include Ava Morgenstern on the Disney Channel series Girl Meets World, and Olive Rozalski on Sydney to the Max.
The Heroes of Olympus is a pentalogy of fantasy-adventure novels written by American author Rick Riordan. The novels detail a conflict between Greek demigods, Roman demigods, and Gaea also known as Mother Earth.
