Erik, or better known as, "The Phantom".
According to Gaston Leroux, the author of the 1910 novel "Le Fantôme de l'Opéra", Erik is described as corpse-like and is referred to as having a "death's-head" (human skull) throughout the story. He has no nose, and his eyes are sunken so deep in his skull that all that is seen are two eye sockets, except when his yellow eyes glow in the dark. His skin is yellowed and tightly stretched across his bones, and only a few wisps of dark brown hair are behind his ears and on his forehead. His mouth is never described in as much detail, but is referred to as a “dead mouth” by Christine, and Erik acknowledges that his mouth is abnormal when lifting up his mask to display ventriloquism. He is described as extremely thin, so much so that he resembles a skeleton.
