With just over three months until X-Men: Days of Future Past hits theaters this May, 20th Century Fox is re-introducing these mutant characters to fans through a series of photos. Following yesterday's photo of Michael Fassbender's Past Magneto, the studio has debuted a photo featuring Ian McKellen as Future Magneto. The actor reprises his role from the original X-Men trilogy, and the end-credits scene in last summer's blockbuster The Wolverine. With such a huge cast in director Bryan Singer's superhero sequel, which character would you like to see next?