Here's the exclusive Comic-Con poster for Frank Miller's Sin City: A Dame To Kill For , featuring Joseph Gordon-Levitt's character. SDCC attendees will get a sneak peek at footage from the long-awaited sequel today.

In the comic book moviel, JGL plays Johnny, a brand new character in the Sin City universe, who will appear in the segment titled "The Long Bad Night" -- which isn't based on any of Miller's previous comics. Johnny is a cocky gambler who disguises a darker mission to destroy his most foul enemy at his best game.Sin City: A Dame to Kill For opens August 22.