Duke Hepnaz L'invrad was an old archdemon, the Lord of the Duchy of Southern Yamato and the leader of the Southern Horde in the Third Age. He eventually began to openly move against the other demon hordes and planned to use the inner conflicts of his enemies to take over Yamato. However, before he could see his plans come to fruition, he was assassinated by Nina Heeate L'andariel who had been posing as his Dreadlady Gin'vel.