Silver Centurion Iron Man: Since the alien invasion that wrecked Manhattan, Tony Stark has withdrawn to his workshop, developing different iterations of the Iron Man armor for every possible scenario. The Silver Centurion is one of them.

Skeleton Armor Iron Man: Each new Iron Man armor, from Mark 8 to Mark 41 (the "Bones" armor), is designed to operate in a particular environment or deal with a specific threat. In addition, each can now be operated without a human pilot.