I love the Ironman films, and just had to draw this one. It took many hours but I did enjoy it.
The Mark VI armor was created by Tony Stark to replace the Mark IV armor when it was discovered that the Arc Reactor could be powered by vibranium, which did not wear out or poison the user. It is similar to the Mark IV in appearance except for the triangular chest piece. Stark developed the new core via building a particle accelerator, then superheating the primary triangular core to a white arc, creating a source acceptable for the Arc reactor.
Here are the lines it took to draw him, before he got the colours