Heirs of Waterdeep
Drasek Riven is a one-eyed former Zhentarim assassin and longtime rival of Erevis Cale.
Drasek has sabres that bleed shadow during combat and has been imbued with a small portion of Mask’s divine essence, making him a demi-god.
Drasek is present at the final battle for the full dive power of Mask. More than present, he seems to be one of the most powerful of the 5 being vying for that power. He and Erevis Cale are now allies.
After he and Erevis were pulled into a near-death experience at the hands of a shadow adept and his slaadi partners, they grudgingly joined forces to oppose them. During this period, Riven and Cale became the first and second of Mask’s five mortal servants and were sometimes known as the right and left hands of Mask.
Riven was Mask’s Second, following Erevis Cale as his friend and associate. As Mask’s second of five, Riven was imbued with certain skills reminiscent of a divine champion, including a shadow-based lay on hands, and divine wrath which causes his sabers to bleed shadow. He was also given the Black Speech which, when spoken, causes anyone within earshot to experience nausea and pain.
Riven was a devout follower of the Shadowlord, and the caretaker of his temple which was stolen from the mad god Cyric. This temple was magically moved by a Githvyrik sorcerer named Vhostym to the Wayrock where it still stands.
Riven was a cold-hearted and efficient killer, and never showed any sympathy towards anyone or anything other than canines. Riven’s eye was lost in a beating he received from an Amnian nobleman who was the slave master of Riven and his mother when he was a child. Riven was a kennelboy at the time, which was how he acquired his affinity for dogs. He became an exarch when he inherited part of Mask’s portfolio (shadows) after the battle with Kesson Rel.