Secret Six is the first on-going series in a string of supervillain team comic books written by Gail Simone, with pencils by Nicola Scott. Just as the mini-series that predate it (Villains United, Secret Six), Secret Six takes place in the main DC Universe.
Secret Six is a freelance team of six supervillains. The team was originally formed out of necessity when they refused to join and subsequently opposed Lex Luthor’s Secrey Society of Super Villains (see: Villains United). The Secret Six henceforth operate as a neutral team-for-hire, willing to take on jobs of any nature in the name of mutual self interest. Over the group’s history, its mainstay members have been Catman, Deadshot, Scandal Savage, and Ragdoll. The remaining spots on the team have been… fluid, to say the least. Former tenants include Cheschire, Knockout, a Parademon, Mad Hatter, Doctor Psycho, Fiddler, and Harley Quinn. The current team’s cast, however, is comprised of the aforementioned mainstays in addition to Bane (the supervillain who famously broke Batman’s back), and Jeannette (a Simone / Scott creation).
Make no mistake: every member of Secret Six is a miscreant. Some of them enjoy killing more than others, but not one of them is innocent; they’ve all got demons. None of them will lose sleep over a few dead bodies, if a situation calls for some. But due to Gail Simone’s unrivaled ability to understand and bring to the forefront the character within a character, you will sympathize with every one of them.