Cutler Kar, also known as The Butcher of Sephadollion is a founding member of the Vitores Tenebras and a former Inquisitor of the Ordo Xenos. Tenebrous One of the Corpus Branch of the Tenebras, Kar specialises in research of Xenotechnology and weaponry, as well as supply other branches with equipment. In order to obtain Xenos technology Kar has set up trade links with Xenos races and factions, using bribery, blackmail and persuasion to get what he wants. Kar also conducts genetic and cybernetic experiments on human and xenos subjects, often splicing the two together. Although he claims to be "improving the human race" though his research, his closest subordinates say he conducts the experiments for little more than sick fascination.