The Cult of Grotki was (and, evidently, still is) an order devoted to undermining the Parliament of Gäsfayögen in order to re-enstate the old ways of the Magic-using Kingdom. Grotki himself is not inherently evil, just a rebellious, zealous fighter for what he believes is right, as are his Cultists. The name of the order is misleading- the members do not fanatically worship Grotki, although they do revere him.