Zarioxus Prime was created by Primerius, together with the other 12 original Great Biengs, to stop Unicron. After they defeated Unicron, Primerius became one with the core of Spherus Magna and created the other Great Biengs. After the Great Biengs created the Matoran, Zarioxus Prime thought that they made a mistake by creating the Matoran and wanted to end their life's in the Mata Nui robot by activating The World Harvester. But the machine can only be activated with the Matrix Of Power. His brothers turned against him but Zarioxus was stronger than all of them. And after years of battle they defeated him, he was sealed within a sarcophagus and his name will forever be The Fallen, they locked him in a secret place inside Mata Nui. Then the other twelve sacrificed them self in the Southern