Human-taheen hybrids also known as Low Men, the can-toi have human bodies but the heads of louse-infested, red-haired rats with multiple rows of teeth. They hide their true faces behind humanoid masks made from a living latex that must breathe through a red hole on the forehead. The can-toi worship the human form and believe they are becoming human, expecting to replace mankind after the fall of the Dark Tower. Their primary duty is guarding the Breakers in the Devar-Toi, though some, like Richard P. Sayre, operate in our world through front companies. Many bear blue coffin-shaped tattoos, the sigul of the Crimson King.