This is Turaga Caldrad. He was part of the Toa Valgard.
About this creation
This is Turaga Caldrad. He is one of the last remaining members of the Toa Valgard. They locked Makuta Trivarn away at the cost of 4 of the Toas and most of the 2 remaining toas powers. When the 2 woke up they saw that they were turaga. (although they are each as powerful as the Toa Joven when they first become toa) Caldrad was once a Toa of fire but when the Toa Vangard sealed away Trivarn, the six of them had to fuse: fire and earth, water and ground, and air and ice. During the battle water and ground were put so close to death that they were forced to split up and then they gave their remaining power to the others: ground to fire and earth, and water to air and ice. He now is a turaga of fire, earth, and ground.
This is his staff when he isn't using it. If you want to know why its like this think of Nami from One Piece's staff.
This is when he is using his staff as a walking stick.
This is what he does when he is fighting 2 enemies. He uses the one in his left hand as a dual-bladed sword. And he uses the one in his right hand as an energy gun.
This is how he fights against one enemy or spear wielder.
This is his sniper gun. Its strong enough to kill a Creeper-Kal.