Hesperdan

Hesperdan was an archmage in the Zhentarim. He schemed to bring Fzoul Chembryl to power in the Black Network, thus allowing him to use Manshoon for his own purposes. Once, speaking to himself, Hesperdan implied that he might not be considered a "man" after all. Regardless, he was considered by some to be perhaps the greatest tyrant mage in all of Faerûn.