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Zaria was a Toa of Iron.
Like most Toa of Iron, Zaria began his life as a Fe-Matoran. It is known that Zaria later became a Toa but the island of his origin and whether or not Zaria was originally part of a Toa Team prior to meeting Orde and Chiara remains unknown.
Hunted by the Brotherhood
Some time after the evolution of the Makuta, the Brotherhood of Makuta began to hunt down any Toa of Iron that they could find as they posed a direct threat to their armor and could kill them easier than most other Toa. Zaria managed to survive being killed in this period.
However, he also ended up killing a Makuta in the process. This meant that he had broken the Toa Code by murdering an enemy.
After Makuta Teridax was killed by a fragment of Aqua Magna during the Battle of Bara Magna, the Matoran Universe was damaged and the inhabitants had to join the mass exodus to Spherus Magna to escape the crumbling robot. Some time after this, Tahu, Gali and Onua recruited Zaria, Orde and Chiara to help carry out Mata Nui's last wish of 'Seeking out the Great Beings" with Gelu.
Shortly after embarking on their quest, the group entered a region of jungle. Orde revealed that he had detected a number of other minds present but that they were being shielded from him. Moments later, the group was ambushed. Seeing a sudden burst of energy, the Sand Stalkers they were riding ran forwards in fear, right into a net, capturing the expedition team. The captors then revealed themselves to be Bota Magna Vorox being led by an Alpha Male named Kabrua. After Zaria and Chiara incinerated the net and attempted to disable their weapons, they were blasted into unconsciousness, leaving only Gelu and Orde standing as the group was taken away.
When the four prisoners were taken back to the Vorox camp, Kabrua insisted that they should be allowed to make a run for it only for his hunters to track them down. Threatening to kill them when they were found, the four prisoners were allowed to escape. After they formulated a plan for the Toa to use their Elemental Powers, the team split in two. Zaria and Chiara took cover and prepared to ambush the persuing Vorox while Gelu and Orde were left responsible for creating a diversion. However, it soon became apparent that Kabrua was blocking the Elemental Powers of the Toa. Shocked by this, Orde and Gelu were forced to abandon their original plan and lead the Vorox East, away from Zaria and Chiara.
- The Yesterday Quest - First Appearance