The rock creatures are a group of small creatures composed of rocks. They are the same species as Rocky, a supporting character in "Wishing Heart Hollow".
The rock creatures love having fun, especially ice skating. In "The Living Sea", they used a rope to take the Ice Stars to an area of water to freeze it for ice skating. They later felt regret for taking the Ice Stars, but the Living Sea said they were welcome to skate on it during winter.
The rock creatures are small in height, and they are all gray in color. Each of them have a set of rocks resembling a hat atop their head, with moss and a mushroom top on it.