Common Denominators | Special Issue

Release Date: May 5, 2012 (Free Comic Book Day)
Timestamps: Two
1. Star City, September 6, 20:12 PDT
2. Gotham City, September 11, 21:48 EDT
Heroes: Green Arrow, Artemis, Batman, and Robin
Villains: Shimmer, Kobra Cult, and Mammoth
Supporting: Dr. Jason Burr
Objects: Trick Arrows and Utility Belt
Places: Earth-16, Star City, Star City World History Museum, Gotham City, and Gotham City Observatory
Written By: Kevin Hopps and Greg Weisman
Artist: Christopher Jones
Colorist: Zac Atkinson
Letterer: Dezi Sienty
Assistant Editor: Sarah Gaydos
Editor: Jim Chadwick