Like many of his fellow Highborne, Peroth'arn swore allegiance to the corrupted Xavius in exchange for gifts of demonic power. As a master of fiendish magic and recipient of the satyr curse, Peroth'arn stands outside Azshara's palace in defense of the Burning Legion, ready to destroy those hoping to disrupt the entrance of the Dark Titan, Sargeras, into Azeroth.
The songs of Queen Azshara's beauty, majesty, and power are too numerous to count, but it was her vanity that drove the Highborne to summon the Burning Legion. She now watches her most trusted magi empower the portal where Sargeras will be brought into Azeroth, content to let multitudes of her servants die in advance of the Dark Titan's arrival.