See all the Iron Man Suits.
Origin & Use
The Mark 3 is the first Iron Man suit used by Tony Stark to actually save the world. After building the prototype Mark 2, Tony asked Jarvis to assemble a new model and to paint it in red and gold, helping him to stay unnoticed.
The first use of this armor was to destroy the Stark Industries’ Weapons owned by terrorists in Afghanistan. At the end of Iron Man 1, this suit is greatly damaged while fighting against Iron Monger, piloted by Obadiah Stane. As you can see on the picture, the chest suffered the most damages.
This suit is a color version of the Mark 2.
The comic version shares a bit with the movie version. But this was drawn more than 40 years ago! That was pretty imaginative for that time.
Mark 3 – Comic Version
If you like this suit and want to wear it, take a look at the Mark 4, which is the same minus the damages.
Since the Mark 3 and 4 are basically the same, see the Build section for the Mark 4.