Zombies don’t make themselves you know, and if you’re going to make a show that’s set in a zombie ridden world, you have to nail the creeptastic, crawl heavy nature of the walking dead. And heavy makeup plays a part but to create scale, fear and power, you need the magic of special effects. All that vomit realistic gore? Special effects. All those scenes of city destruction? Green screened. All the zombies? Fake! (you knew that one, I hope).