Khelben Arunsun the Younger is a human born to Zelphar Arunsun and Lhestyn in Waterdeep in 1302 DR. Although most people know him as the "Blackstaff," he actually left Faerûn to travel the planes, and was replaced by his grandfather, Khelben "Blackstaff" Arunsun the Elder.
- Ed Greenwood and Steven E. Schend (July 1994). City of Splendors. (TSR, Inc). ISBN 0-5607-6868-1.
- Ed Greenwood (1993). The Code of the Harpers. (TSR, Inc). ISBN 1-56076-644-1.