A while back we brought you news about Steven Soderbergh‘s upcoming femme fatale flick, Knockout. The director cast professional fighter Gina Carano in the lead role, and with such a daring move you’ve got to have some serious backup, so he brought out the big boys for the supporting cast.

Today, several sites have posted news regarding the casting for the film including Movieline, who reported that Inglourious Basterds star Michael Fassbender had landed a role. They recently interviewed the actor and learned that Soderbergh will start filming early next month in Dublin. Other than that he couldn’t give any specifics on his part, except that it will have some level of physicality.

Next in line, The Playlist revealed that Michael Douglas, Dennis Quaid, and Ewan McGregor will also co-star, and gave a small character description for each. All the male actors will be a part of Carano’s special team. Douglas will play an older government official, Fassbender and a yet to be named actor will be members of her commando spy unit, and McGregor will be the owner of the private military company she works for.

The specifics on Quaid’s character haven’t been released, but we’re sure he’ll be in the thick of whatever drama the script has to offer. There’s also been a slight change in the film’s story, which originally centered on a girl from the wrong side of the tracks. Now she was raised in the military, and left to work for a Blackwater-esque company to make better money but is betrayed by one of her teammates.

It sounds like Soderbergh’s creating a super team of actors to protect the novice star at the center. This isn’t the first time the director has put an unknown in a lead role, and it probably won’t be the last. To see these men in a military action flick does sound intriguing, especially if its done in the same tone as the Bourne movies.

What do you think about the latest castings for Knockout?