3. The Comedian (Watchmen)
Although the Comedian (Edward Blake) plays a major part in the plot of the Watchmen movie (being both Silk Spectre's Father and part of the bigger picture in Ozymandias' sinister plot), he barely actually appears in it. Blake is killed very early on in the movie by the lead antagonist, Ozymandias, but he had been one of the former Watchmen who had been forced to give up crime-fighting thanks to masked crime fighters being outlawed - but he went on to be a government-sanctioned agent, along with Doctor Manhattan, fighting crime lawfully. He is an extremely interesting character whose implied actions from the graphic novel are explicitly confirmed in the film adaptation. Examples include him being responsible for the John F. Kennedy assassination and the assassinations of Woodward and Bernstein in the Watergate Scandal. Had the film focused a little more on the early years of this character (who was said to be 67 years old when he died in the movie) instead of the Cold War period that it was actually set in (leading some critics to call it "boring" and "stiff"), it may have been more of a box office and critical success.