Rahi Nui

The Rahi Nui was a mutant Rahi created by the Brotherhood of Makuta, to hunt down Toa.

History
The Rahi Nui was created by Makuta Teridax.

The first Toa to come across the Rahi Nui was Lesovikk and he was able to defeat it. How he accomplished this is unknown.

Teridax later gave the Rahi Nui to the Dark Hunters, and it was eventually returned. Teridax then placed it in the caverns beneath Mata Nui.

Toa Metru
The Rahi Nui fought the Toa Metru beneath Mata Nui while they were returning to Metru Nui. After a short, but intense, battle, the Rahi Nui managed to defeat all of the Toa Metru except Vakama and Nuju. The two then made an important discovery: The Rahi Nui increased in size when absorbing Elemental Power, but its mass did not increase. The two repeatedly hit with their energies until Rahi Nui grew too large to stay together, and it's molecules drifted apart.

Toa Nuva
It later reappeared in the Place of Shadow on Mata Nui, but without its Kanoka powers. When the Toa Nuva faced the Rahi Nui, Turaga Vakama used his Kanohi Huna to lure the Rahi Nui into a wall when the Rahi recognized his voice. Charging, the Rahi Nui missed Vakama, rammed his head into the wall, and got its horns stuck. Vakama and the Toa Nuva were then able to escape. The Rahi Nui remained trapped in the wall for a long time.

It later migrated to Spherus Magna after the Battle of Bara Magna.

Abilities and Traits
The Rahi Nui had traits from several other Rahi species: the head of a Kane-Ra, the forelegs of a Tarakava, the body of a Muaka, the stinger of a Nui-Jaga, and enlarged wings from a Nui-Rama. The Rahi Nui was able to use all of the Kanoka Disk powers and absorb Elemental Energy, but later lost these abilities. It could also sense and trace elemental energy.

Appearances

 * BIONICLE Chronicles 4: Tales of the Masks
 * BIONICLE Adventures 6: Maze of Shadows
 * BIONICLE: Maze of Shadows (minor appearance; only Rahi Nui's tail was shown)

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