3. The Avengers Face Ultron's Army (Avengers: Age Of Ultron)
At the end of Avengers: Age of Ultron, with new recruits Scarlet Witch, Quicksilver and Vision in tow, the Avengers did battle with Ultron as a group of nine for the first time. Standing in a circle as the robotic villain's army of drones approached from all sides, the new-look team looked awesome from above.