According to rumors, Willem Dafoe--who played the role of Norman Osborn/Green Goblin in the original Spider-Man film, has been spotted on the set of "Spider-Man 3."
While the rumor of Tobey Maguire's possible return in "Spider-Man 3" is yet to be confirmed, a new concept art showed what he would look like in his Spidey suit again.
Elizabeth Olsen herself implied that her character, Scarlet Witch, might appear on Spider-Man 3. However, there are several reasons why she should not.