Sekijiro is a very tall, wide-set man of a bulky, muscular build, with lightly tanned skin, a few visible scars showing on his left cheek and the left side of his notably thick neck. He has short pale gray hair which is spiked upwards, away from his face, the only exception to this being the small clump of hair which hangs down over the left of his forehead. His eyes are very small and thin, and he has a wide mouth with two prominent lower canines, which appear even when his mouth is closed.