There are 15 Demon NMs in Dynamis-Xarcabard. Duke Berith is the RDM NM (found in the small wall structure where the Vhazl crystal would be). He is next to Count Zaebos (WAR) and Marquis Decarabia (BRD). These NMs always drop at least a 1 or 100 piece of currency, and a copy of Schultz' Stratagems (200~500 exp scroll). Occasionally, (Treasure Hunter helps a lot) these NMs will drop the the lvl 75 relic armor that corresponds to their job (i.e. Berith drops the Duelist's Chapeau).