A species of parasites that invaded a human planet after the Concordiat and the Last War . They subverted a number of Mk. XXXII Bolo's by implanting them with copies of human consciousness, and used them to fight the Mk. XXXIIIs that the Confederacy (a human successor state to the Concordiat) sent to liberate the planet. Their own infantry were genetically engineered brutes and they had some fairly heavy gravtanks, but nothing on the scale of a Bolo.