Sildar Hallwinter was a kindhearted human male who held a place of honor in the famous griffon cavalry of the great city of Waterdeep. Sildar met Gundren Rockseeker in Neverwinter and agreed to accompany him back to Phandalin. Along the way he was captured by the Craigmaw Goblins, who were after Grunden. He was taken to the Craigmaw Hideout where he was brutally tortured until freed by a group of adventurers known as The Harlequins
As an agent of the Lords’ Alliance, Sildar’s goal was to bring law and order to Phandalin. Following his release from the Cragmaw Caves he went to Phandalin to seek Iarno Albrek and to assist in policing the town.