Earth is a planet populated by humans, and other animals. It was a somewhat peaceful planet... that's before Lance, Ilana, and Octus came. There is a city called Sherman, Illinois. It was, and still is a peaceful city. It seems to be the "battle ground of the Sym-Bionic Titan (mech), and the monsters. Many of Earth's forces, including the citizens, G3, and General Julius Steel's army, are looking for any leads about the ailens.