The Jungle A Summary and Review of Upton Sinclair's The Jungle Upton's Sinclair's book portrayed a wide variety of characters to convey his messages. Only one character can be considered a major character, Jurgis Rudkus. The book revolves around Jurgis' life in Packingtown. The supporting characters, transitioned in and out of the story with great frequency. When Jurgis initially arrives in Packingtown from his native Lithuania he can best be described as being large and powerful. He believes in the work ethic to a point of naïveté. His sole answer to any setback: "I will work harder." Eventually Jurgis learns that no laborer can make enough to be