9. S.K.I.N.
The S.K.I.N. armour had two or three differing iterations, but the spirit was the same: a much larger suit, initially augmented with pipes and tubes for an almost Steampunk appearance. In the S.K.I.N., Tony looked hulking, almost inhuman.
More notably, however, it marked the reappearance of a fully integrated artificial intelligence in the suit, going by the name ‘Jocasta’. Commands could be given, advice could be taken from the suit itself; the films have been playing with this idea already, showing Tony in constant contact with JARVIS. While JARVIS offers advice and regulates Tony in the suit, however, Jocasta shared control.
The potential, here, is clear for the big screen. Imagine the problems arising from Stark increasingly relying on self-reliant AI in the suit, or even the possibility of the suit being compromised by a technological villain such as Ultron. It is in finding chinks in Stark’s armour, literally, that renders him vulnerable and offers a credible threat.