Calla Bryn Sturgis's seven-foot-tall Messenger Robot, bearing the North Central Positronics stamp. With a gold body, silvery limbs, stainless steel head, and electric blue eyes, Andy wanders the Calla spreading gossip, singing songs, and telling horoscopes. His most important function is accurately predicting the coming of the Wolves each generation. In truth, Andy secretly works for the Crimson King's minions in Thunderclap, infecting twin children with deadly diseases and blackmailing their parents into serving as spies for the Wolves.