wired: Twenty years after the release of Tim Burton’s legendary stop-motion animated film The Nightmare Before Christmas, its popular protagonist Jack Skellington lives on — this time in Disney’s $100 million virtual toybox Disney Infinity. Jack Skellington’s Infinity figurine — available in GameStop stores now and everywhere else October 29 — unlocks the Pumpkin King himself as a playable character in the Infinity Toy Box mode, as well as a new challenge level called “Jack’s Nightmare.” WIRED recently caught up with Disney Infinity executive producer John Vignocchi and art director Jeff Bunker to learn more about the process of adapting Burton’s iconic character, and got an exclusive look at some behind-the-scenes concepts and character studies. [MORE: Jack Skellington’s Journey Into Disney’s Infinity]