User blog comment:Jacknapier10/Which characters cannot appear in the Marvel Cinematic Universe?/@comment-25866432-20140510164147

Right now, none of the characters associated with the Spiderman franchise (including norman osborn, doc ock, etc.), all characters associated with the x men franchise (including Magneto, Bolivar Trask, Deadpool, etc.), all characters associated with the Fantastic 4 Franchise (including doctor doom, galactus, skrulls). The chart you have sums it up pretty well.