'Stranger Things' stars Millie Bobby Brown, Noach Schnapp, Sadie Sink, Finn Wolfhard, Caleb McLaughlin, Gaten Matarazzo, Charlie Heaton, Joe Keery, Maya Hawke, Natalia Dyer and Jamie Campbell Bower sat down with The Hollywood Reporter to react to some of the Internet's wildest fan theories...however, some hit a little too close to the plot of season five. Check out how the cast react to some theories that were actually correct about the final season.