Agnien

History
During the events of the Great Cataclysm, several incidents changed in this iteration of the Matoran Universe. Many were simple, some far reaching, but all eventually converged in a different state of affairs come the awakening of the Matoran on the Island of Mata Nui a thousand years after leaving behind Metru Nui beneath.

Agnien is one of a handful to inherit a new destiny following the Unknown Catastrophe, wherein which Makuta Teridax was forcefully purified by Takanuva Toa of Twilight at the cost of the latter's life. What exactly happened before, during, and afterward remains a mystery to all. As word spread of Teridax's redemption, including out into the remaining Islands, the Turaga invoked a clause of old - their reluctant ally must be defended by a competent team of Toa, as once the Brotherhood of Makuta had been by the Toa Hagah.

When the Toa Nuva eventually fell one by one against hordes of unending Dark Hunters and other Makuta seeking to drag Teridax back into the shadows, the last, Kopaka Nuva, accepted the fate his brethren had been served and self-sacrificed his dwindling powers to create a fresh set of Toa Stones, one of which was gifted to Agnien, a mechanically-inclined Matoran of Fire often mistaken for a Matoran of Iron given her prowess.

Post Transformation
Agnien, alongside Khaith, [remaining Toa Terid], have set to work turning Mata Nui and Teridax's lair into a fortress capable of repelling any assault previously demonstrated. Recently attacks have begun to come by sea, leading to confusion over how another opening to the surface could exist.

Powers
As with the other Toa Terid, Agnien's powers differ from the norm. Her body is more of a mechanical hybrid than typical Toa biological-machine meshes. Her elemental power stems from the En Kal Emblem attached to her back, from which tubing runs into her shoulders to channel her fire throughout the rest of her body. The Neo Kaukau allows her to swim through lava unassisted, projecting a shielding energy for short bursts of time, as well as controlling the fire thrown from her plasma lance.