Melegor Chaserperi

Melegor Chaserperi was a member of the Chaserperi clan of mages of the late mid-14 century DR.

Rumors & Legends
He was said to have leveraged the secret of an entrance into Candlekeep into a deal where the Chaserperi clan performed many tasks in Candlekeep, thus gaining a place in the fortress. However, per Melegor, there were other hidden passages of which he had never spoken.