Baron Mordo

Baron Mordo is due to appear in the Marvel Cinematic Universe in 2016’s Doctor Strange movie, played by 12 Years a Slave actor Chiwetel Ejiofor.

While he has never been in the Masters of Evil in the comic books, he would provide the personal connection to future-Avenger Doctor Strange in a movie depiction of the team and would provide the bulk of the team’s magical power.

Like many other characters on this list, Mordo would probably have his own motives, but he in particular would pose a threat to his supposed allies from within with his notorious deceptiveness and potential deceit.