Funktional Beverages Inc. is targeting fans of the “The Dark Knight Rises” by advertising its Purple Stuff beverage line in a special-edition comic. One million copies of “Batman: Earth One,” a 40-page comic book featuring Purple Stuff advertising, were given away at comic book stores across the nation to promote the movie. The new advertising promotion aims to expose teens to the nutritional soda, the company said. Funktional Beverages says this is just one of many comic tie-ins they’re planning to promote more consumer interaction.