“With No Power Comes No Responsibility” — Kick-Ass

Mark Millar sold the film rights to his four-issue comic miniseries Kick-Ass before the first issue was even published, and before the miniseries, which was drawn by John Romita Jr., was completed.

Inspired by conversations Millar had with his friends as a teenager wondering why no one had ever tried to become a superhero in real life, Millar’s goal with Kick-Ass was to take those conversations and see what would happen if a kid decided to actually put that thought to an action. It’s pretty much what the original Nite Owl decided to do in the 1930s in Watchmen, except for the Internet age.

Millar’s comic and Matthew Vaughn’s film both were finished simultaneously, though both worked toward the same general ending.

Vaughn met Millar at the premiere for the former’s adaptation of Neil Gaiman’s Stardust, and the development of the film was far more collaborative than ...