Thagdal was non-member of the Zhentarim who operated a small and local wizard's guild within the Tower of the Art in Zhentil Keep. He was a mousy, easily flustered individual who possessed a sharp mind and was always interested about the goings-on within the city. Despite this, he and his colleges within the wizard's guild tried to maintain a low profile, although Fzoul Chembryl always kept a close eye on them.