An Earth Colossus. It's body built from rock, earth, iron, lodestone, diamond and other natural minerals. The magnetic flux that flows within it's body, act as a main energy source and allows it to move freely.
Right Arm - Diamond structured arm
Left Arm - Iron/steel ore, the iron fist is attached to the arm with the magnetic flux, like a flail.
**Lodestone - is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, that attract pieces of iron.
The Colossus Sketch Progress : [link]
Tools : painter x , photoshop cs4