Dagannoth Kings

The Dagannoth Kings (also known as DKS) are three level 303 dagannoths that live deep in the Waterbirth Island dungeon.
 * Dagannoth Rex, attacks with Melee and is weak to Magic
 * Dagannoth Supreme, attacks with Ranged and is weak to Melee
 * Dagannoth Prime, attacks with Magic and is weak to Ranged

Drops
Every Dagannoth King drops Dragon axes. In addition, they all have other unique drops of their own. The Dagannoth Kings drop Dagannoth Hides and Dagannoth Bones every kill 100%, also they can drop Spined, Skeletal and Rock-Shell pieces which require the Fremennik Trials quest and 40 Defence to wear.
 * Rex: Berserker ring, Warrior ring
 * Supreme: Archer's ring, Seercull
 * Prime: Seers' ring, Mud battlestaff