Although Sin City: A Dame to Kill For has been shooting for some time now, the nature of the production means that not all of the actors have to be on set at the same time. Directors Robert Rodriguez and Frank Miller have been taking advantage of that by roping in their stars when they can, so even now we’re getting some major casting announcements. The new addition this week is Stacy Keach, who’ll play a major villain called Wallenquist. Hit the jump to keep reading.

As previously reported, Sin City: A Dame to Kill For will consist of several different plot threads, two of which come from Miller’s original comic book series and the rest of which were written by Miller specifically for the film. Keach’s character appears in the title story, which falls in the former category. While the Sin City universe is populated with complicated heroes and rotten lowlifes, mob boss Wallenquist is among the wort of the worst. Miller describes him as “pure evil,” and “the one man who can’t be redeemed in Sin City.” The A Dame to Kill For arc also features Josh Brolin as Dwight and Eva Green as Ava Lord.

Casting Keach seems like a fun nod to Sin City‘s noir roots. Among Keach’s most recognizable roles is Mike Hammer, a P.I. character based on the crime novels by Mickey Spillane. Keach portrayed Hammer in the TV series Mickey Spillane’s Mike Hammer and its follow-up The New Mike Hammer from 1984 through 1987, and again on Mike Hammer, Private Eye in the 1997-1998 season. On the big screen, Keach has appeared in American History X, The Bourne Legacy, and Rodriguez’s Machete. He recently wrapped Alexander Payne’s Nebraska, due out later this year.

Keach joins several faces new to the Sin City sequel, including Green, Brolin, Joseph Gordon-LevittJulia Garner, Jamie Chung, Dennis Haysbert, Christopher Meloni, Ray Liotta, Jeremy Piven, and Juno Temple. In addition, the film features returning actors Bruce Willis, Mickey Rourke, Jessica Alba, Rosario Dawson, and Jamie King. Sin City: A Dame to Kill For lands in theaters October 4.

Cool Posts From Around the Web: