While a version of The Mandarin did appear in Iron Man 3, it was merely a decoy for the true villain, Aldrich Killian. At first, it did not appear that there was a "real" Mandarin in the Marvel ...
Tony Stark had become a fixture of the Marvel Cinematic Universe by the time that Iron Man 3 rolled around in 2013, but this was the movie that showed us all how much of a fixture that the MCU had ...