' secrets has been revealed early, as Sir Ben Kingsley made a surprise appearance at Monday's red carpet premiere and confirmed he is indeed making his return to the MCU in the movie.«As you just saw, I was talking to Kevin Feige,» Kingsley told ET's Matt Cohen, «and thanks to Kevin and Robert Downey Jr. and Drew Pearce and Shane Black, I in this movie and I'm a member of the Marvel family, because their welcome on was so astonishing and generous that I'm still with Marvel again.