HEROES OF IMPILTUR
The most powerful demon to ever walk the Abyss, scourge of mankind, and master of the black flame (self-titled.) The person who takes the most pride from killing this load-mouthed demon is cursed to become the demon. The heroes first encountered the demon when the archer, Orpheus Quinn, transformed into him on the way to Yurley. The final blow to the demon in that encounter was delivered by Rogan, who acquired the curse. Later, the party allowed Rogan to complete his transformation into Iyetrayoo while inside the Starlight Citadel. Using the Star Sextant, the heroes exiled the citadel (with Iyetrayoo in it) into the Shadowfell. Recently, in the demon-infested city of Dun Tharos, the adventurers once again encountered Iyetrayoo. This time he was locked in a magical prison in the middle of the stronghold of the Queen Abiding. The heroes left Iyetrayoo trapped in the prison. How he managed to get out of the Shadowfell and into that prison remains a mystery.