Being an African vampire, the creature is dark in color for camouflage amongst other humans, until they discover the strange hook-like appendages on their legs. From a distance, they appear to be human (except for the appendages on their legs) but once you get closer, you would notice the bat-like facial features such as the pointed ears and the nose. The Asanbosam is also built to have superhuman speed, agility, and strength. Their favorite prey sources are canopy birds, small tree-living/or ground living mammals, and humans.
The picture above is an illustration of an Asanbosam.