DreamWorks Animation Debuts Trailer for The Spooky Tales of Captain Underpants: Hack-A-Ween “Sneak or Snack” your way through the all-new Halloween special exclusively on Netflix! Based on the epic novels of Dav Pilkey (over 80 million copies in print!) comes the Captain Underpants Halloween special, DreamWorks The Spooky Tales of Captain Underpants: Hack-A-Ween premiering on …