This scheming old witch was the servant of Lord Darigan and Lord Kass (although not at the same time) and the mother of the Court Dancer, who she sent to hypnotize King Skarl and his troops in Meridell with her dancing. Morguss was in charge of zombifying peasants and petpets and sent occasional Nova Storms at the Meridell troops.
Hold still, Kingy. This is going to hurt quite a bit.
Morguss is also a member of the Order of the Red Erisim.