Duval is a very large man who was originally introduced wearing a large mask, with long red tufts attached to it, giving him his epithet Iron Mask Duval. While standing, he appears around two and a half times a normal person's height. He has a muscular torso, but has skinny arms and legs. Besides his head and shoulders which are covered in armor, he wears an open leather jacket, black pants, cowboy boots, and a long fur cape