One of Syldar’s friends from his group, The Baron’s Coalition. The wizard in his late 40’s traveled to Phandalin two months ago to establish order there. After the Baron’s Coalition received no word from Iarno, Syldar decided to investigate.
It turns out that Iarno is Glasstaff, who took over the Redbrand thugs. He tried to kill Lucien Palantir but failed as Lucien is now tracking him down to exact revenge upon him.
He gets lost in the Wave Echo Cave and the heroes kidnap him. After he was interrogated by them, Lucien killed him.