Bloody Bones

Character #09 - Monsters & Mythology

Bloody Bones is sometimes regarded as a water demon haunting deep ponds, oceans and old marl pits (which often became filled with water to form ponds) where it dragged children into the depths, much like the grindylow and Jenny Greenteeth. Children were told to "keep away from the marl-pit or rawhead and bloody bones will have you."

Ruth Tongue said in Somerset Folklore that he "lived in a dark cupboard, usually under the stairs. If you were heroic enough to peep through a crack you would get a glimpse of the dreadful, crouching creature, with blood running down his face, seated waiting on a pile of raw bones that had belonged to children who told lies or said bad words. If you peeped through the keyhole he got you anyway."

Source: Wikipedia