The Zhentarim Expedition
The Shadow Broker
The go between for the team and the Zhentarim
The Shadow broker is veiled in mystery, who he is and where he comes from is unknown to the party. He provides them with a source of quests for the Zhentanim and requires a cut upon the successful completion of the quest if they gained anything from it. He is the main point of communication with the higher ups in the faction and oversees them and a couple other small specialty groups in the faction.
He wears a Mask when in front of the Party so they have never seen his face, obviously is of a wealthy upbringing and is most likely a part of aristocracy of some land though his accent makes it hard to place.