If you’re not familiar with Amulet, the all-ages graphic novel series by Kazu Kibuishi, you should ask yourself what you’ve been doing with your life.
Kibuishi was the mastermind behind the incredibly good Flight anthology, and he started Amulet—a grim but family-friendly science fiction/fantasy mashup—many, many moons ago. In fact, I first heard of the series back when I was closely following Jeff Smith, creator of Bone, so that should have been, oh, a good decade past. Indeed, the Wikipedia page indicates that the first volume made its appearance in 2008.