In the Democratic Republic of the Congo there is a vampiric creature called a biloko. A hairless humanoid, grass grows on its body and it uses leaves as clothing. This is possibly why its name translates to probably mean “food”. It is described as having long, sharp claws, piercing eyes, and a snoutlike nose.

The biloko has a most unusual way of hunting — from a hiding place it rings a magical bell that can put a person to sleep and then it opens its mouth up wide enough to swallow its prey whole. With the use of its bell, the biloko is often appointed as a guardian of hidden treasure. It lives in the deepest parts of the rain forest in the hollows of trees. Fortunately, amulets and fetishes can be made that will protect the wearer.

Source: Chopra, Dictionary of Mythology, 53; Knappert, Bantu Myths and Other Tales, 142; Knappert, Myths and Legends of the Congo, 130