Drego featured heavily in the Mistwalkers campaign, as he became the mentor of Dax' Athla. He was present for many of their adventures, helping them to save the world on multiple occasions.
Drego Sarhain is a Knight-Diligent of the Order of the Gilded Labyrinth, and a diplomat for the nation of Thrane. He's one of the church's few Silver Pyromancers, an arcane spellcaster who channels the power of the Silver Flame. He is also an agent of the Argentum, specialising in the acquisition of magical artifacts and gathering intelligence.
His mother was a seamstress, an art that she taught him, and so he is often better dressed than one might expect from a priest. He often adorns his clothing with animated silver flames, giving the impression that he is on fire.