All the Iron Man Armors including Iron Legion

There is a total of 42 Iron Man armors/suits in the Iron Man 3 movie. Mark VIII to XLI belong to the Iron Legion, a group of remote-controlled Iron Man armors serving as Iron Man's main combat support team.

This video shows all (if not, most of) the Iron Man armors in Iron Man 3. Mark VII, XLII and Iron Legion appeared in Iron Man 3 while Mark I, II and III first appeared in Iron Man 1, Mark IV, V, VI first appeared in Iron Man 2 and Mark VI and VII appeared in The Avengers. These collectible figures are by Hot Toys and Play Imaginative Super Alloy.