King Khoroth of Drakhara

Koroth was the last known king of the eastern realm of Drakhara, who became the first of Sorimmar's seven Zûl.

Sometime in the Fifth Age, Koroth fell victim to the power of Sorimmar and accepted a weapon of great magical power from him. Once Koroth possessed this weapon, its energy consumed his life-force, and he became the first of the Zûl, or ‘Shadows."

At that point, Koroth became totally subservient to the will of his master Sorimmar.

According to legend, Koroth was a distant descendant of King Koroth Penrose II of Adar who had been slain in 1297/4, during the Battle of the Dawn.