While Iron Man is a household name these days, thanks to his charismatic portrayal by Robert Downey Jr. in the Marvel Cinematic Universe, he wasn't always the publisher's most popular character.

This aspect of his character was most prominent during Dave Michelinie and Bob Layton's "Demon in a Bottle" storyline, which ran for the better part of a year from the pages of 1978's Iron Man #20 ...