Deep within Waterbirth Dungeon, there are three legendary kings, known as Dagannoth Supreme, Dagannoth Prime, and Dagannoth Rex. They use Ranged, Magic, and Melee, respectively, and can hit extremely high with their respective styles. They also have extremely higher defense against different sides of the combat style (For instance, Supreme is difficult to damage with anything but melee) and must be fought carefully unless you do not care about death.