Ekimu

Ekimu was one of the legendary Maskmakers on Okoto and the brother of Makuta. He wore the Mask of Creation.

History
Ekimu was a legendary crafter of Masks of Power, alongside his brother Makuta. Makuta, however, grew jealous as the inhabitants of Okoto valued Ekimu's masks more than his. When Makuta created and donned the Mask of Ultimate Power, Ekimu saw this, and knocked the mask from Makuta's face, but the resulting shockwave put him and Makuta into a deep slumber.

Powers and Tools
As a Maskmaker, Ekimu was able to create masks of incredible power. Considering his masks were more valuable, it is assumed he was better at crafting them than Makuta. He wielded a large hammer, which he used to shape his creations as well as using it in battle.

He also wore the Mask of Creation.

Trivia

 * Ekimu seems to play a similar role in the 2015 story to the role Mata Nui played in the original story.