The graffiti shown in the scene with the kids is the logo of one of the actors, MekaX.
The film takes place three years after the first Dark Knight film.
At first, TheFallen123 didn't want to make a sequel right away. He said, "I love The Dark Knight and all, but I don't want to create that many movies for him. I want it to remain special. Not something you wait for each year." However, on July 26, 2013, he announced the official production of a sequel.
Part One was originally scheduled for release on March 9th, but due to technical difficulties and audio issues, along with forgetting to add in a pivotal scene, it was delayed until March 10th.
The film was to have two versions released: a silent version and a voice-acted version. Nearly a year later, the voice-acted version has yet to be released.