Nidhiki (DMU)

Nidhiki was the Toa of Air responsible for creating the splinter timeline known as the Dark Mirror Universe.

Dark Mirror
Nidhiki was a member of the Toa Mangai, a large Toa team responsible for safeguarding Metru Nui. When Lhikan discovered that one of their own, Toa Tuyet, was using the Nui Stone to kill Matoran and frame the Dark Hunters, he asked Nidhiki to come with him to confront her. Nidhiki agreed, chiefly because he was curious about the Stone. When he bore witness to the awesome power that the Stone contained, he was presented with a choice: either side with Lhikan and destroy the Nui Stone, preventing anyone from abusing its power ever again, or side with Tuyet and reap the rewards that the Stone could give him. Nidhiki decided to side with Tuyet, creating the splinter timeline known as the Dark Mirror Universe. He killed Lhikan and helped Tuyet establish what would later become the Toa Empire.

Nidhiki faded into obscurity for the most part for the next 3500 years, but remained a high-ranking member of the Empire.

One day, Nidhiki was put in charge of a squad tasked with wiping out the Nynrah Ghosts in case they might someday make something that could be used against Tuyet. Nidhiki and his squad killed four dozen Matoran on this mission. When Pohatu discovered this, he was so sickened by Nidhiki and Tuyet's crimes that he allied himself with the resistance to bring them to justice.

Dusk and Dawn
Following the death of Tuyet, Nidhiki was one of the world leaders summoned by Dume to discuss what would happen to the universe without Tuyet. For obvious reasons, Nidhiki represented what remained of the Empire.

Elemental Powers

 * Air Creation - Nidhiki could create and channel air through either his Air Scythe or his hands.
 * Air Control - Nidhiki had complete control over air, and could change air currents to create anything from a gentle breeze to a small tornado.
 * Air Absorption - Nidhiki could absorb certain amounts of air into his body, which became stored for use in future elemental attacks. This could be used to create controlled vacuums or cut off someone's air supply.
 * Air Nova Blast - In extreme circumstances, Nidhiki could release all of his elemental energy in the form of an air nova blast, which would create a wind strong enough to wipe all traces of civilization from an area the size of a large city.

Mask Powers

 * Stealth - When Nidhiki's Kanohi Volitak was activated, he became mostly transparent and all of his movements were silenced. However, he still cast a shadow while in this state.