He has written a substantial amount of supplemental material for a number of DC Comics' line-wide and inter-title crossovers, including "No Man's Land", "Infinite Crisis" and "New Krypton".

Greg Rucka was born in San Francisco and raised on the Monterey Peninsula of California, in an area known to the locals as "Steinbeck Country".

[1] He first discovered comics at the Nob Hill Market in Salinas, California, where at age five, he first saw digest-sized black and white reprints of Stan Lee and Jack Kirby's work on The Incredible Hulk, which he convinced his mother to buy.

The series to date consists of Keeper, Finder, Smoker, Shooting at Midnight, Critical Space, Patriot Acts, and Walking Dead.

The "Atticus" novels are notable for their realism and attention to detail, which is partly a product of Rucka's fight training and experience as an EMT.

[7] While writing Detective Comics, he created a number of background characters that led to the co-creation of Gotham Central with co-writer Ed Brubaker.

Although he was not involved in the main storyline of Infinite Crisis, he did write The OMAC Project[5] which built towards the event, focusing on Batman's distrust of other superheroes.

[14] This series chronicled in real-time the year following Infinite Crisis, and saw Rucka focus on Renee Montoya of Gotham Central[15] and the creation of the new Batwoman, Kate Kane.

[17][18][19] Rucka wrote the screenplay for the "Crossfire" segment in the direct-to-DVD anime Batman: Gotham Knight, in which Crispus Allen, a character he created, appears.

[20] In 2009, Rucka and artist Eddy Barrows took over Action Comics as the title moved its focus from Superman to Kryptonian heroes Nightwing and Flamebird in the aftermath of the "New Krypton" story arc.

[25] On July 11, 2011, Rucka launched the webcomic Lady Sabre and the Pirates of the Ineffable Aether, a steampunk adventure series illustrated by Rick Burchett.

[31] In 2017, Rucka wrote the creator-owned series The Old Guard, which was drawn by Leandro Fernandez, colored by Daniela Miwa and published by Image Comics.