This is basically a revenge elemental - a large creature that delivers the rage of the fallen to those who cut them down. It vaguely resembles a giant cat-like creature whose fiery hide consists of faces of all kinds twisted in anger. The creature's legs are actually composed of the gravestones of its fallen comrades - it is literally propelled by their deaths. Skulls roll in its eyes. Its body is lashed-together fragments of burial shrouds, bone, and coffin planks. The flush of red throughout the creature demonstrates that it's not about death, but about the reaction of rage following it.
Something roams the killing places, sniffing the guilt of the slayers, stalking them on iron paws.