In The Avengers: Age of Ultron Earth’s Mightiest must reunite and work with newcomers Quicksilver and Scarlet Witch to battle new antagonist Ultron, who receives an all-new origin story, while dealing with a new level of inner conflict amongst the team. Quicksilver & Scarlet Witch may not necessarily agree with The Avengers and Tony Stark may be responsible for the creation of the new villain