Manshoon
For years, Manshoon was the lord of Zhentil Keep and leader of the Zhentarim. Completely fitting the archetype of the sly-tongued, sinister and decadent master spellcaster, Manshoon ruthlessly crushed revolts within his own ranks of the Black Network, easily slaughtered his rivals and weeded the weak out of the ranks of the young and ambitious.
In 1370 DR, Manshoon was “slain” by Fzoul and Lord Orgauth, who then found themselves facing around a dozen clones that the wizard had created. Each of the clones was convinced that he was the real Manshoon and was inexplicably compelled to slay his rival clones. Most of them perished in the ensuing battles, known as the Manshoon Wars.