Introduction of Ivan Vanko (an amalgam of Whiplash and Crimson Dynamo) played by Mickey Rourke
- His father Anton Vanko working on the Arc Reactor with Howard Stark, and feels his son deserves the legacy as much as Tony.
Tony's history with drinking is addressed
Pepper Potts is made CEO of Stark Tech
Introduction of Black Widow (Natasha Romanova) under the alias Natalie Rushman played by Scarlett Johansson
