The coolest thing about the terrible Fantastic Four movie was the Silver Surfer. Doctor Strange hits the big screen soon. It really would not be that hard to cast a Valkyrie. We have already seen the Hulk, he would just need to be a bit more intelligent. These four are top power level super hero's. Way above the Avengers. If they make a movie, you'd have to assume the villain would be on Mephisto or Galactus level.