I think I'am the first at attempting this one, at least in the realm. This is Ezekiel Stane, son of Obadiah Stane, and as you can guess an enemy of Iron Man that wears his own superpowered suit of armour. With a quite innovative design and colours.

The custom; made with a Iron Man movie, with left hand of another Iron Man and right hand from Dr Midnite. Sculpted completely the head, power source, knee pads and minor details.