The Nagrakal Thraexii are recruited from a range of different worlds and cultures conquered by the World Eaters. Armour panels are painted a dark tan, redolent of the sands of the gladiatorial pits in which both Auxiliaries and Legionaries train in combat techniques – though in truth the latter often train at the expense of the lives of the former – ranging from one-on-one duels to massed melees. Undersuits are black, and details are picked out in white and dark red.