You for sure saw these famous actors on the big screen, but did you notice that they secretly had a second role, hidden within the same movie! WatchMojo presents the Top 10 Actors You Didn't Know Played Multiple Roles in Movies! But which actor will take the top spot on our list? Will it be Benedict Cumberbatch in "Doctor Strange", Robin Williams in "Aladdin", or Warwick Davis in the "Harry Potter" franchise? Watch to find out!