Color and Texture: The Rock Pikmin has a dark gray or black color. Reflecting the texture of rocks like slate or biotite schist, it should have a smooth and slightly shiny surface with a matte stone-like appearance.

Shape: The body of the Rock Pikmin is polygonal with angular edges and faces, giving an overall rounded and heavy feel.

Eyes and Limbs: The eyes are prominently bright in color and have a simple round shape. The limbs should appear as if they are protruding from the rock, being short and thick.