X-Men: First Class is garnering nothing but rave reviews from its first select screenings, and the movie is looking like a certified hit. Which, of course, means we will be getting a sequel sometime in the near future. With fifteen mutants on hand and counting, this first prequel already seems stuffed to the brim with characters. We recently got the chance to talk exclusively with director Matthew Vaughn about the ensemble nature of these movies, and how adding more faces to a sequel might throw off the perfect balance he has found here.

Matthew Vaughn revealed that the X-Men: First Class sequel will only be adding one major new character. Who will that character be, though? The director refuses to say so early out.

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Here is what Matthew Vaughn had to say about the addition of only one major new character in the proposed X-Men: First Class Sequel.

"We will only have one more new character. I won't say who he...I won't say who he or she is! But we will only be bringing one more new character in. Because, I think, as Professor X is in a wheelchair, Magneto needs to have a nemesis he can fight with. Someone that will be his equal. I know who it is. It would be nice if I could say something, but I can't, mate!"

Matthew Vaughn also doesn't rule out the possibility of Sir Ian McKellen and Sir Patrick Stewart showing up in the sequel via a flash-forward.

"I have worked with Sir Ian McKellen before, and he is a lovely guy. I would love to work with him again. So, never say never!"