Knight of Darkness, is the unique class held by Balder in Legend of Ogre Battle Gaiden: Prince of Zenobia. He is the final boss of the game, fought at Laika Lakeshore. By default, he is in the back row behind two Arc Samurai.
The Knight of Darkness has enough powerful attacks to single-handedly cripple any unit in an even contest. The tarot cards Fool (to dismiss his minions) and World (to render his magic ineffective) are highly recommended when engaging him.