Gaaki

Gaaki was a Toa of Water before she became a Rahaga, she was a Toa Hagah. She has now been turned back into the Toa Hagah of Water.

Toa
Not much is known of Gaaki's life before her recruitment into the Toa Hagah. What is known was that she was active as a Toa for quite some time beforehand, operating as a member of another Toa team. Whether or not Gaaki was the leader of this team hasn't been revealed. When the Brotherhood of Makuta decided that Makuta Teridax needed Toa bodyguards, Gaaki was selected as representative Toa of Water of the new team. She was endowed with metallic armor to indicate her status as an elite Toa and her former teammates presented her with her current Kanohi as a badge of honor.

Toa Hagah
Toa Gaaki was a member of the Toa Hagah, six elite Toa who served the Brotherhood of Makuta. She was a Toa of Water, although nothing else is known during that time. She and the other Hagah were asigned as bodyguards for the Brotherhood of Makuta protecting him from attacks such as Rahi as Teridax didn't have the time. Later however, the Toa Hagah discovered that the Brotherhood was actually enslaving and oppressing Matoran. The Toa Hagah then raided the Brotherhood of Makuta fortress. In the process, all except for Norik and Iruini were captured. Gaaki and the other three Toa were then mutated by Roodaka into the Rahaga. They were eventually rescued by Norik and Iruini, who were also mutated into Rahaga at the hands of Roodaka.

Rahaga
Gaaki is feisty, independent and at home in the water, and she is always trying to prove she is just as a good a trapper as the other Rahaga. She uses her staff as bait to entice swimming Rahi, then catches them using her floater spinners.

Current
After they were transformed back into Toa Hagah, Gaaki and the others are now keeping watch over Roodaka and, despite their mutual hatred, protecting her island from being destroyed.

Abilities and Traits
As a Toa of Water Gaaki can create and absorb water. This also gives her the ability to control water, create storms, and cause floods. These abilities were lost when she was turned into a Rahaga, but she has since regained her powers.

Tools
As a Toa Hagah, Gaaki probably carried some sort of spear and a shield with a Rhotuka launcher. As a Rahaga, Gaaki used her staff as bait for aquatic Rahi. Her Rhotuka spinner was used to capture those Rahi by flowing through the depths, attatching itself to the target, and floating them up to the surface.