Widely known as a tyrant, Harren Hoare or Harren the Black was King of the Riverlands and the Iron Isles during the War of Conquest. When Aegon invaded Westeros, the Riverlands were the first to be scorched by dragon fire. Harren saw the completion of Harrenhal, the greatest of the strongholds of Westeros, for which Weirwood trees were felled in order to be built. Confident in the strength of its walls, Harren was undeterred by the small Targaryen army and refused to bend the knee. Aegon destroyed Harrenhal with his dragon, burning Harren and his entire house within its walls. Aegon awarded the Iron Islands to House Greyjoy and the Riverlands to House Tully, and both swore fealty to the Iron Throne.
(with Simon Woods as Aegon Targaryen.)