Isitsubute is a gray boulder Pokémon. It has bulging, rocky eyebrows, trapezoidal, brown eyes and a wide mouth. Its arms are muscular with five-fingered hands. Isitsubute uses its arms to climb steadily up steep mountain paths. It is proud of its sturdy body and will bash against others of its kind in a contest of sorts to prove whose body is harder. The longer it lives, the more chipped and worn its body becomes. Eventually, it will be completely smooth and round. As a result of their physical appearance, Rhyperior mistake this Pokémon for actual boulders and fire them through their hands.
Isitsubute can be most often found on mountain trails and fields. It will sit still in these areas, which is why it is often mistaken for a rock. It is often stepped on and will sometimes swing its arms in anger when this occurs. When Isitsubute sleeps deeply, it buries itself halfway into the ground. Once buried, it will not awaken even if someone steps on it. In the morning, Isitsubute rolls downhill in search of food.
