Hariyama are very large, hulking and mostly grayish-colored Pokémon that are modelled after sumo wrestlers. Their most notable feature, of which they use extensively in battle, is their extremely large orange hands with three fingers. On their heads, they have a pointed, triangular crest, and the V-shaped pattern of dark blue that runs across the tops of their eyes sports a long blue "ponytail" in the back. On the sides of Hariyama's head are its round, stubby ears with visible holes in them. They have a semicircular pattern of orange coloration, shaped somewhat like a rising sun, on their abdomen. Hariyama have yellow skirt-like extensions on their waists and large, thick, dark blue legs with orange, two-toed feet. While Hariyama's body appears to be mostly fat, it is actually mostly muscle.