Nadrathen, usually know as The Rebel Chosen, was a powerful male wizard. He was once one of the Chosen of Mystra but he decided to follow only his will against his goddess and for this he was destroyed by Elminster Aumar.
Nadrathen, under the name Ilgrist, became the Court Wizard of King Baerimgrim of Galadorna. On the king's death in 764 DR, faced with the feuds between the kingdom's barons, he nominated himself king. However, he was soon after destroyed by Elminster and Dasumia.