Rogue Trader: Ad Astra
Inasmuch as the organization has one, Calcus is the leader of the Black Brotherhood. More a sort of group coach than a military officer, he appears to be respected for his strength and combat ability. In actuality, Calcus is a tremendously experienced combat leader. Nearing four score years old, his age is concealed by his biological augments, muscle implants, internal cybernetics, and facial scars. Despite his brutal appearance, he is in actuality a jovial fellow who enjoys recreational activities, sporting events, and physical contests. His gregariousness extends only so far as his allies, however, and should anyone cross him, his men, or should he be paid to do so, he will commit murder with a disturbingly casual attitude. A born killer, if ever there was one.