A new clip from X-Men: Days of Future Past has been released online by 20th Century Fox. The clip spotlights Professor X. Professor X will be played in the future era of the film by Patrick Stewart, who played the character in the original X-Men trilogy. In the 1970s era, Charles Xavier is played by James McAvoy, who played the character in X-Men: First Class. X-Men: Days of Future Past will tell of how Charles Xavier learned to accept his role as a mutant leader in order to usher mutants and humankind into a brighter future. In X-Men: Days of Future Past, the X-Men send Wolverine to the past in a desperate effort to change history and prevent an event that results in doom for both humans and mutants. X-Men: Days of Future Past comes to theaters May 23.