The Hero of the films, a young cartoonist who works in Kinston Falls' bank. Receiving Gizmo as a pet from his dad, Billy quickly learns to appreciate the Schmuck Bait for caring for him. Things quickly go topsy turvy as the Gremlins rampage through the town with Billy being the only person dealing with the chaos. In the sequel, he works at Daniel Clamp's business tower in New York as a concept artist.