Ferumbras

Long ago, Ferumbras appeared and reigned terror among Thaians, his first attack on Thais left many dead, summoning Demons and Warlocks to aid him in destruction. When he attacked again he was finally taken down and thought to be gone for good. A while after that, Ferumbras returned after finding his daughter Fortinbrae, had been killed. Upon learning her whereabouts he traveled to the Plains of Havoc to face an army of Tibians who were waiting for him. Ferumbras took on the army but eventually was beaten and Tibia believed that it would be the last they've seen of Ferumbras. Although some years later, books were discovered and it was revealed that Ferumbras himself had written them admitting he had faked his death in the Plains of Havoc and was plotting his revenge againts the people who had taken him down. Now he has been discovered by adventureres in a citadel on one of the Forbidden Islands, named Kharos. After all those years he grew stronger and he's got a powerful army protecting him.