Zaruchim (ザルチム, Zaruchimu) and Raushin Mo (ラウシン・モー, Raushin Mō) are one of the major antagonists of the Faudo Arc. They're also Riou's right arm. Their spells use Shadow Magic. Zaruchim holds a grudge against Alishie due to his limitless determination that managed to intimidate him. In the anime, Zaruchim's spellbook is burned by Zatch Bell's twin brother when he comes to take over Faudo.