Osiris Morvante, also known as Osiris the Man Eater, was a Night Lords' Headsman turned Company Captain after a vicious Murder Duel late in the Great Crusade for command over his Company with his former Captain; who Osiris believed to be an incompetent fool unworthy of the position he held over his brothers. Even before the Horus Heresy, Osiris' name was infamous among the Legiones Astartes, as he often led his brothers into battle clad in midnight blue power armor that was covered in appendages and organs, which he proceeded to feast upon during combat. Those that tried to fruitlessly fend off Osiris and his brothers soon found themselves without morale as they witness a seven foot monster feast upon the hearts and limbs of fallen warriors.