Bill is Tracer Bullet's probation officer. He is mentioned by Tracer Bullet but never seen. Bill's only mention is when Bullet says "Snooping pays the bills, though. Especially Bill, my bookie, and Bill my, probation officer". Retrieved from "https://calvinandhobbes.fandom.com/wiki/Bill_(probation_officer)?oldid=29740" Categories: Unseen characters Extremely minor characters Minor characters Minor characters in story arcs Community content is available under CC-BY-SA unless otherwise noted.