Duke Sigmund Igthorn is the primary villain of the series. Once the greatest knight of Dunwyn, he was exiled after conspiring against King Gregor. He found refuge in Castle Drekmore and formed an army of local ogres. He is a bad-tempered and scheming villain, who constantly seeks to conquer the castle and kingdom of Dunwyn. After having encountered the Gummi Bears, he has employed their secrets time and again to fulfill his plans, but he always meets only short-lived success at best. Eventually, he later became responsible for the fall of Gummi Glen.
