Short. He has two horns on his head that are often compared to be the shape of a boomerang or croissant. He is almost completely covered in black fur except for some white fur around his face, and he has a thin tail with a hard, spiked barb at the end. While his eyes are normally dark they will glow red while he is using his magical abilities. From Chapter 225 onwards he also has a scar over his left eye running down to his cheek comprised of two slashing claw marks.