Deumion, a Superboss present in the 20th Anniversary release of Final Fantasy II. The focus of the Arcane Labyrinth series of optional dungeons, Deumion was a young boy with great magical power during a time of war. When a kingdom developed the ultimate magic, Destroy, Deumion was recruited to guard its power from the wrong hands. He was sealed within the Arcane Labyrinth, immortal until Firion and his companions traversed the Labyrinth to confront him. Depending on the Key Term the player tells Deumion, he will reward the party with either Destroy, Restore or a character's ultimate weapon. Telling Deumion "Destruction" will initiate a battle with him with the Destroy Tome as the spoils of victory.