Deviljho is a very large, bipedal Brute Wyvern characterized by its uniform forest green colouration and muscular upper body. Its thick hide is littered with short, jagged spines that reach a maximum height along the back and tail. Deviljho has a narrow snout with a large lower jaw, covered in multiple rows of teeth spreading outwards from the mouth. It has massive, powerful hind legs, but tiny, poorly developed forelegs that it rarely utilizes. When provoked, Deviljho's back and shoulder muscles swell considerably. During this period, areas of its skin will take on a bright red colouration.