Rokou

"I am Rokou, powerful Toa of Fire and sole protecter of Meta Nui," -Rokou to Avron, Part 1 of The Story of Meta Nui.

History
It is unknown how or when Rokou became a toa, but it is certain that he has been a toa for over 50,000 years. He has lived in Meta Nui all his life, originally being the leader of the Toa Meta. Once they were disbanded, he stayed in Meta Nui, and was the first one to meet Avron when he came to the island.

Brudaka
When Brudaka attacked Meta Nui, Rokou led his team in a fight against them. Although the battle was going against them at first, the Toa Meta formed a plan and trapped the whole oppsing army, only to have them freed by Brudaka. They retreated into Le-Meta, where their base was located. In there, Brudaka and Crudaka had an argument that led to a mutiny, allowing the toa to drive them back to their ships and leave Meta Nui. Brudaka slipped away during the fight, to no one knows where.

The Mask of Time
When the Mask of Time was discovered by Fire Spitter, Kapen entrusted Rokou with bringing it to the new building where it would be kept. While flying through a forest to get there, he was lost in thought and slammed into a tree. He dropped it and the mask was lost underneath the vegetation. When Rokou got to Fire Spitter, he explained what happened, and Fire Spitter decided that no one would know of the incident.

Powers and abilities
Rokou can create, control, and absorb fire, as well as shoot it from his hands. His fire swords can channel his element, and allow him to fly, much like Lewa Neva. His Kanohi Kiril can be used to regenerate inorganic material, though it cannot regenerate living things. Rokou has a resistance to heat and flame, due to the fact that he is a Toa of Fire.

Personality
Rokou was an excellent strategist, forming plans that outwitted enemies and often turned the tide of battle. However, once the other toa left, and no one was coming to Meta Nui, he got out of practice with his powers, slowly lost his sharp wits, never formed any plans, and became a complete moron. He is now quite dull, Kapen calling him a "bumbling idiot", which is mostly true. He will sometimes make dumb remarks and questions, which are usually ignored. Overall, he is a happy-go-lucky Toa with the personality of a Matoran.

Trivia

 * Rokou is Toa Avron's oldest still assembled MOC.
 * Rokou's loss of the Mask of Time is based on Toa Avron losing his in real life.
 * Toa Avron originally gave Rokou Turaga Dume's mask, and wanted it to be a mask of regeneration. However, it was not until later on that he found out that it really was.