Over 100,000 years ago, Makuta Teridax was created by the Great Beings and was brought into being
City of Legends
The Great Rescue
The Dark Time
Coming of the Toa Mata
The Mask of LightFollowing the defeat of the Bohrok and their queens, the Bahrag, the Kanohi Avohkii, known as the Mask of Light was eventually discovered by Takua in the lava chamber during his Kolhii training with his friend Jaller, a Ta-Matoran and the future Toa Inika. At the same time in Mangaia, Teridax also foresaw the discovery of the Avohkii and the coming of the seventh Toa. Fearing that his darkness will disappear, he immediately extract out the Kraata from his body and fit them into armors of Guurahk, Lerahk and Panrahk, thus awakening them. Teridax then ordered them to find the Herald of the seventh Toa and destroy the Avohkii in order to prevent the prophecy from happening. The three Rahkshi then make their way to Ta-Koro where they destroyed the entire village, only to find both the herald and the mask weren't there.
Quest in Voya Nui
Event in Mahri Nui
Mata Nui's Reawakening
Reign of Shadows
A weeks after Teridax successfully take over the Great Spirit Robot and finally taken over the Matoran Universe, the Toa and their allies were forced to hide in the tunnels of the Archives when Teridax summoned the army of Rahkshi
Quest in Okoto
A few years since after the battle in Spherus Magna, Teridax was revealed to have survive Tahu's Nova Blast but was gravely weakened. His injury forced him to start his new plan of restoring his power so that he can take over the universe once again.
In the end, he went back to the Matoran Universe and headed towards the ruins of Mahri Nui and revived Takadox and they went to hid in the Archives' lower tunnel.There, Teridax gave him a mechanical legs before manipulating him with his new plan. With that, he orders Takadox to go to the planet of Okoto and find the new allies. Takadox that teleported himself into Okoto whil Teridax remained behind to nurse himself. Soon after that, Takadox manages to find the giant spider called the Lord of Skull Spiders who was wandering in the forest and tricked him into working for Teridax. With that, Teridax eventually agreed and he had the Lord of Skull Spiders to attack Metru Nui .
When Nektann and Ehlek have returned to Destral, Nektann immediately informed to both Chirox and Bitil that both Pridak and Gorast were died, which shocked them both. Realizing that the Brotherhood cannot go on wihout the leader, Chirox decided to think about the next leader before dimissing both Nektann and Ehlek.
Later, Chirox walked into the room when he suddenly sensed the strong energy which came from Nektann's pouch on the table. Out of curiosity, he walked towards the pouch and discovered the Mask of Ultimate Power inside it.