LONDON, ENGLAND - APRIL 21:  (L-R) Paul Bettany,  Jeremy Renner, Scarlett Johansson,  Mark Ruffalo, Chris Evans, Robert Downey Jr and Chris Hemsworth attend the European premiere of "The Avengers: Age Of Ultron" at Westfield London on April 21, 2015 in London, England.  (Photo by Dave J Hogan/Getty Images)