Adalon

Adalon is a silver dragon living in the Underdark near the city of Ust Natha. Her task is to guard this first drow city and maintain peace between the drow and the elves of Suldanesselar.

During the events of Baldur's Gate II: Shadows of Amn (both game and novel), Jon Irenicus stole Adalon's eggs and held them for ransom, giving them to the matrom mother of one of the houses in Ust Natha. Adalon enlisted the aid of the protagonist (canonically Abdel Adrian) and their companions to retrieve them, turning them (not the eggs) into the likeness of drow so that they might infiltrate Ust Natha.