Metalhead is from a lost tribe of the bionicle universe. He is a toa of an unknown element which is a superconductor at room temperature. He turned into a toa after an incident that supercharged him with all six elements and light. Being a superconductor, he can absorb all types of energy, then produce them in miniscule amounts.
Metalhead is very serious and quiet most of the time. There are times he can act kingly at times.
The front of his waist.
The back of his waist.
The mask of life on his back is just to fill space.
A view of his arm.
I know that this mask is overused, but it looks the closest to how his mask would actually look like. Look at my buddy icon to see this.
The blades on his arms can folded down for combat.
Because he has the element of air, he can hover slightly.