He first appeared in The Doctor Zone Files in line for The Doctor Zone Files the Movie Files. He is first seen arguing with a friend about speaking the Trash-Candroid's binary language.
He also reappears in The Wilder West. In both appearances, he is dressed as Dr. Zone. He was the main skeptic of the farm Sara found being the farm used in episode 576 of Doctor Zone until everyone else misinterpreted a comment and similarly concluded, though incorrectly, that it wasn't.
Josh later reappeared in Missing Milo working as a cashier at Milo's local grocery store, sans his Doctor Zone costume.