A local tour guide in Perfection who initially stages fake worm attacks for tourists. After his assistant is killed by a real worm, Jack transitions to a genuine survivor. He demonstrates bravery by helping Burt rescue him from a worm's stomach and distracting an albino worm with a tracking device. Post-attack, he pursues a romantic relationship with Jodi Chang, which creates tension with Mindy Sterngood. He remains in Perfection as the town adapts to living alongside the now-protected worms.