Gaten Matarazzo takes a lie detector test. Did he think Stranger Things was going to be such a big hit? Does one of the main characters die this season? Does he read Stranger Things fan theories on Reddit? Would he bring back Barb from the Upside Down? Does he ship Hopper and Joyce? What are his favorite video games? Find out all that and more in this video. Season three of Stranger Things debuts on Netflix on July 4th.