Spark (Robozuna)

This is how

[At Cortex's castle, Makuta angerly walks down the halls]

Makuta: That Ryan ruined my plans to rule Metru Nui and have Sunset! I need a way to make Mata Nui gone forever!

[He saw a poster of a giant robot and Ryvine making a mask by combining the powers of the powers of the Elements of Harmony and the elemental powers]