The Armenian Cataphracts (heavily armored cavalry) of King Artaxias I the Kind (reigned 189-160 BCE, grandfather of the King of Kings, Tigranes the Great), founder of the Artaxiad Dynasty of Greater Armenia which succeeded the Orontid Dynasty.
Software: Zbrush, 3ds Max & Vray.
Made by Robert Hazarapetyan
His cap is a form of Armenian Mithraic Cap
You can see more of his wonderful works here
http://roberthazarapetyan.com/