User blog comment:$milelover/Man in the shadows?/@comment-1520028-20121108221919

my theory is that the Man in Shadows is Mysterio, and in The Amazing Spider-Man 2, Doctor Octopus, Sandman, Electro, Lizard, Mysterio and Scorpion or Vulture or Green Goblin would appear in a post-credits scene, setting the villains of The Amazing Spider-Man 3 as the Sinister Six.