In July 2014, at Comic-Con it was confirmed that Slappy the Dummy, The Executioner from A Night In Terror Tower, the giant praying mantises from A Shocker On Shock Street, and Murder the Clown from When Ghost Dogs Howl will feature in the oncoming film. Other confirmed evil entities include The Mummy from Curse of the Mummy's Tomb and The Scarecrow from The Scarecrow Walks At Midnight. With over fifty books to choose from, the film crew had to cut some monsters from the books for budget reasons, but director Rob Letterman stated that the crew tried to choose the monsters most appropriate to the story.