Billionaire industrialist, cold warrior, weapons designer, alcoholic, philanthropist, Avenger--Tony Stark, alter-ego of Marvel Comics' Iron Man, has played many roles in his five decades as a superhero. From his 1963 comics debut in Tales of Suspense to the recent film adaptations--The Avengers (2012), Iron Man 3 (2013)--hundreds of creators have had a hand in writing the character with evolving depictions and distinct artistic...