We should come up with secret codenames, we're secret agents now! I'll start, I'm going to be... ...Mystique.Mystique in X-Men: First Class. And Beast, remember… mutant and proud.Mystique to Beast. Mystique (real name Raven Darkholme) is a major character of the film series. She is a mutant with the ability to shape-shift into anyone and also copy their voice. In the first three X-Men movies, she was portrayed by Rebecca Romijn. In the X-Men prequel timeline, she was portrayed by Jennifer Lawren