My character is a human cleric. At some point they were "killed" and had visions of Illus the Lantern and became a disciple of their word. He has since spent many hours studying the world, language, and history in the confines of textbooks and temples, and he now looks to expand his knowledge and spread the word of his deity.
Physically, Crypt Keeper appears like a grim reaper with a mace and a shield.