Production on director Matthew Vaughn‘s new comic book movie X-Men: First Class is getting ready to begin later this month, so the final castings should be coming through very soon. A new name now being added to the mix is Rose Byrne, who is currently in negotiations on a deal that would see her joining the cast that already features James McAvoy, Michael Fassbender, and Kevin Bacon.

Byrne would be playing Moira MacTaggert, a scientist and expert on genetic mutations who finds herself in a romance with McAvoy’s character, a young Professor Xavier. Not much is known about the film’s storyline, but we do know it will focus strongly on the young Professor X and Magneto (Fassbender), when they had a close bond with each other before differences in opinion ultimately saw them traveling much different paths.