We reported a few days ago that four actors have signed on to an upcoming film and now it seems that the first actress has joined the cast. Bleeding Cool is reporting that Summer Glau has signed on to the cast of Knights of Badassdom.

The site didn't have any details on what kind of character Glau would be playing, but she joins a cast that includes Steve Zahn, Peter Dinklage, Ryan Kwanten and Danny Pudi. The story revolves around a group of live-action roleplayers who somehow unearth a demon and the site's source revealed some new details on the demons.

"More good news - the demons are going to be created by the geniuses at Spectral Motion, previously responsible for various Hellboy hellions and several Last Stand X-Men."

We'll be sure to keep you posted on any further details on this new film project.