Gotham Underground is a nine-issue limited series from DC Comics, written by Frank Tieri, with art by Jim Califiore.

The Riddler is a supervillain appearing in American comic books published by DC Comics. The character was created by Bill Finger and Dick Sprang, and debuted in Detective Comics #140 in October 1948. He has become one of the most enduring enemies of the superhero Batman and belongs to the collective of adversaries that make up his rogues gallery.