Hellboy: Blood and Iron is a 2007 American animated superhero film based on Mike Mignola's comic book series Hellboy and its 2004 live-action film adaptation. It is the second film in the Hellboy Animated series (the first being Hellboy: Sword of Storms), written by Tad Stones and Mike Mignola. It first aired on March 10, 2007 on Cartoon...