The Arzinian Avatar of Strength is an avatar of the Arzinian Being of Bordanzan that may be fought in the Between a Rock... quest. It only appears if a player's highest combat stat is ranged, if it is melee or magic, the avatar of magic or ranging will appear instead, respectively.
Its strength is based on how much gold ore a player has in their inventory. If fought with 5 or less gold ore, it will have no combat level and possess the ability to infinitely regenerate. If fought with at least 6 ores, it will be level 125, and if fought with 15 or more, it will be level 75.