7. The Hulkbuster Assembles (Avengers: Age Of Ultron)
After Scarlet Witch had triggered Bruce Banner's transformation into the Hulk in Avengers: Age of Ultron, Tony Stark took action. He called his "Veronica" suit into action for the first time - an armour built specifically to deal with the Hulk should he go rogue - and when it was fully assembled it looked incredible.