Injustice: Gods Among Us — DC Comics
Issue: #15
There's a standoff in the halls of Arkham Asylum, as Superman attempts to whisk its inmates to a more secure prison and Batman tries to stop him. Robin joins with Superman, Harley Quinn shows up at the wrong time and a very imposing inmate is turned loose.
Creators: Tom Derenick, Ray Snyder, Wes Abbott, Sarah Gaydos, Alejandro Sanchez, Kathryn Layno, Drew Johnson, Jim Chadwick, Tom Taylor
Characters: Batman, Dick Grayson, Superman, Killer Croc, Two-Face, Harley Quinn, Mad Hatter, Mr. Zsasz, Damian Wayne, Riddler, Barry Allen, Cyborg, Wonder Woman, Green Arrow, Calendar Man, Solomon Grundy