For years, fans have wanted X-Men and Fantastic Four to be part of the Marvel Cinematic Universe. But the film rights to those comic books have been with Fox. Stan Lee says that fans need not worry about ?sooner or later,? the movie rights to all Marvel characters, including the X-Men and the Fantastic Four, will eventually return to Marvel Studios. Lee said ?They?re working on it, and they?re still making X-Men movies and stuff. Don?t worry about it.