rocky's exterior has a rough, rock - like quality to it. his skin color varies from blackish - brown to brown. he has five limbs, similar in appearance to a spider. on each limb, there are three fingers. none of his hands appear to have a finger which functions as a thumb. on the top of his carapace, there is a pentagonal outcropping of the same rock - like material as the rest of his body. this has five slits, which is what rocky uses to breathe. his carapace is 1 8 inches wide at its widest, and about 9 inches thick. he is usually wearing a greenish - brown shirt that goes up to his elbows, with a hole on the top and bottom.