OXM UK: "Fortunately, Terminal Reality has read the book, and is taking its direction from American TV channel AMC's zombie bible. Near the top is the fact that they're not zombies, they're Walkers. You'll also notice the same washed-out sepia tones from the TV show. Another, less obvious rule came up when some toothless Walker designs were rejected. In The Walking Dead, Walkers don't just have full sets of teeth - they're pushed forward to make them extra bitey."