A week before Guardians of the Galaxy opened in theaters, en route to becoming the biggest movie of 2014 so far with over $372 million, writer-director James Gunn signed on to write and direct Guardians of the Galaxy 2. The filmmaker teased new details about the sequel, including the possibility of new characters, during Variety's Entertainment and Technology Summit, where he joked about how the sequel will open."It's going to be a really surprising open.