Hoard of the Dragon Queen Part Two: Rise of the Great White Dragon
The heroes briefly spotted this purple robed leader type from the tower in the Keep.
Some people have a certain way of turning up later, and it’s tough to forget the purple robed figure that was well guarded and able to command the chaos in Greenest with relative ease. You would too if you had a dragon.
Update: Recent discoveries have indicated that this person is Frulam Mondath, who was the designated leader of the raid and the camp.