Kualus

Kualus was the Toa Hagah of Ice before he become a Rahaga.

Toa Hagah
Kualus was a Toa of Ice and a member of the Toa Hagah. He served as a bodyguard to the Makuta of Metru Nui,until they found out he was not protecting the Matoran. Kualus was captured and turned into a Rahaga when he and the other Toa stole the Avohkii from the Brotherhood.

Rahaga
Kualus was fiercely protective of all flying Rahi, and even spoke in their language at times, adding clicks and whistles to his sentences. He taught this language to Nuju. He used his staff to summon flying creatures or warn them of danger. His boomerang spinners could latch on to a flying Rahi and bring it to him.