Create a detailed, ultra-realistic image of the Sandman from the Netflix show, standing unmasked on a pile of Dragon Treasure. The character should be screaming at the camera, surrounded by real bats, in the style of a blockbuster Ghostbusters movie print advertisement. Incorporate elements of Pixar cartoon and British propaganda poster aesthetics. Ensure the image is in 4K, high-definition, and features intricate, lifelike details. The output should be a masterpiece, trending on ArtStation, with no watermark signature.