Karso

Karso was an Av-Matoran warrior, who was captured and transformed into a Shadow Matoran by the Brotherhood of Makuta.

Early Life
Similarly to most other Av-Matoran, Karso was created by the Great Beings to participate in the construction of the Great Spirit Mata Nui, with no worldly desires or true consciousness. Upon its completion, he was placed inside the Matoran Universe, which then departed Spherus Magna.

Mask and Tools
As an Av-Matoran, Karso wore a powerless Kanohi Zatth, the Mask of Summoning, and wielded twin Power Swords. He also had a rocket booster that allowed for limited flight.

Following his transformation into a Shadow Matoran, Kirop was equipped with a pair of small wings, which allowed him to fly short distances. His Kanohi remained a Zatth due to the disgraceful nature behind it.

Trivia

 * Karso's name was suggested by BobTheDoctor27, who once used the name on another Av-Matoran.