The cast for Matthew Vaughn’s X-Men: First Class re-boot is rounding into shape as the studio announced today that Jennifer Lawrence will be playing Mystique and Kevin Bacon will portray the film’s chief villain.

Lawrence, who is currently starring in Winter’s Bone, will play the blue mutant shapeshifter, who was portrayed by Rebecca Romijn in the first three X-Men films. 

Fox has not released any information about the character that Kevin Bacon will play, though Variety is reporting than fan speculation is centering on Mister Sinister as the villain for the origin story that stars James MacAvoy  as the young Charles Xavier and Michael Fassbender as the youthful Erik Lensherr (Magneto) (see “X-Men Casting Is First Class”).