Image Courtesy of Marvel Comics Marvel has some of the greatest villains ever, and the two most popular are easily Doctor Doom and Magneto. Honestly, both of them started out pretty similar; they were both over the top regal villains, known for hyperbole and histrionics. They quickly became the most popular villains with their teams, and that led to them […] The post Marvel’s Most Dangerous Villain Is Mister Sinister (Not Magneto or Doom) appeared first on ComicBook.com .