Spinoffonline reports that Kevin Bacon has signed as the Villain in X-Men: First Class. So far, he is the biggest name on the film, and I can see him playing a great villain. Also, Jennifer Lawrence, who starred in Winter’s Bone, is casted as Mystique.
All the quick signings within the past two weeks indicates that director, Matthew Vaughn, knows what he wants, and is serious about the film.