Pohatu

Pohatu is the Toa/Master of stone on Okoto.

Lego.com description
Pohatu is unyielding and fearless. Renowned for his unbreakable stamina, he is arguably the toughest of all the heroes. With firm resolution and mysterious stubbornness Pohatu strides forward as a fearless vanguard leading the way of the heroes. Well almost fearless. Pohatu does NOT like the dark.

History
At an unknown time Pohatu crashed on Okoto.