Onua is the strongest of the Toa mata.
Pakari, mask of strength
"You are a Toa -- Prove yourself worthy of the name!"
Onua, Into the Nest
"Now, Pohatu, my brother... Didn't Turaga Onewa ever tell you? You always have to watch where you're running- Especially when Onua Nuva is near!"
Onua, Divided We Fall
He was released again in 2002 as a Toa Nuva whit 41 pieces. He could be combined with the Tahu and Pohatu Nuva sets to make Akamai nuva