Larvitar are small dark green reptilian Pokémon with rocky skin. They have an erect spine on top of their heads, angular black streak markings below and on the upper corners of their red-colored eyes, and several holes or ports on the sides of their bodies. They also have a scaled red rhombus-shaped belly of sorts. Larvitar have fingerless arms and legs with a single nailed toe and a tail somewhat resembling a pine cone or tunnel-boring machine in appearance.