Arnubalkân was one of the best explorers that the King's Men had. Ar-Pharazôn utilized his skills across the world. Arnubalkân had successfully dominated the lands of Middle Earth and ensnared many slaves to his will. He was one of many that supplied Numenor with slaves and sacrifices to Melkor. A sick demented man, Arnubalkân passed with the rest of the King's Men into the Caves of the Forgotten.