Image Courtesy of Marvel Comics Mister Sinister was supposed to be the big X-Men villain coming before Disney bought Fox and rebooted everything. However, there is still a chance that the Marvel Cinematic Universe could use Mister Sinister, especially since he hasn’t been actually seen in a movie yet af Fox, and he could end up as a perfect new […] The post 5 Marvel Stories That Defined Mister Sinister appeared first on ComicBook.com .