Creatures of the Void, these beings are ruthless, bloodthirsty, and very evil. They scare the pants off of the Binturians. Although some adventurers call them "Murder Elementals," they are not technically elementals at all, as murder is not, in fact, an element. However, they are indeed the anthropomorphic personification of murder.
They tend to be the servants of Teseroth (who?), however this is not one of their essential qualities.