Scooby-Doo! Team-Up is a comic-book series published by DC Comics, starting on November 20, 2013, featuring guests from the DC Comics Universe and Hanna-Barbera. From issues 1-3, each story featured Batman and Robin, as well as some of his other allies, like Ace the Bat-Hound. From issues 4-6, characters from outside of Batman's world started to appear (i.e. Teen Titans, Wonder Woman, and the Super Friends), either mentioning or having him as a part of an ensemble guest cast. Issues 7 and 8 expanded into the Hanna-Barbera universe, with The Flintstones and The Jetsons, respectively.