Teyrnfradwr Marwolaeth is one of the few Valkyrie who had gone against their species, and is considered a traitor by all. Teyrnfradwr was taken at the age of 12 by Fredrick Hemming, a necromancer, who wanted to use him in one of his experiments. Fredrick cast a spell on Teyrnfradwr that turned him into a dark creature, even his mind and heart had been corrupted by the dark magic. Teyrnfradwr now fights for the Nocteran Assassins.