Duessel

Duessel, known as Dussel (デュッセル, Dyusseru) in Japan, is a great knight who appears in Fire Emblem: The Sacred Stones. He is one of Grado's six generals, known as Obsidian. He is very loyal to Grado, but their crimes lead him to follow his own beliefs and betray the nation. He joins Eirika's army in Chapter 15, or Ephraim's army in Chapter 10.