Fan Casting Tony Stark in MMU/6.: The Avengers (2012)

In this movie Tony is working with S.H.I.E.L.D. and try to bring the Avengers together. He settled with Pepper in New York and building his Stark Tower which later will be invaded by Loki. Tony's arrogance made it difficult to get on well with his teammates, specially Cap, but in the end they give enough respect to each other. At the end Tony is the one who stops the nuke and saves New York from Loki's army.