Under their gas masks they have stark white faces and their eyes are sewn shut with thick thread. Their mouths appear to be cut with a knife. In the anime, these puppets are vampire corpses that are controlled using a lost technology that utilizes Dietrich's thin string-like living fibers transplanted on the skin. Once fused into the nervous system, the fibers sends out electrical impulses which allows the "puppeteer" to control his victim's nervous system and senses. In