Hariyama is a large, thin woman modeled after a sumo wrestler. She has big eyes and wears blue headband-shaped headphones. On her head there is a short, triangular crest. Tufts of dark blue hair grow over the top of her eyes, around the crest of her head, and extend down her back to form a long ponytail. His body is white-skinned. Yellow extensions surround her waist, resembling a skirt. There is a small orange semicircle mark in the center of her torso, just above her skirt.