Indiana Jones Chronicles" explains how Indiana becomes solitary and less idealistic following his service in World War I. In "Indiana Jones and the Kingdom of the Crystal Skull", Jones is older and wiser, whereas his sidekicks Mutt and Mac are youthfully arrogant and greedy, respectively. Indiana Jones is modeled after the strong-jawed heroes of the matinée serials and pulp magazines that George Lucas and Steven Spielberg enjoyed in their childhoods (such as the Republic Pictures serials, and the Doc Savage series). Sir H. Rider Haggard's safari guide/big game hunter Allan Quatermain of "King Solomon's Mines", who dates back to 1885, is a
Indiana Jones film's introduction, set in 1912, provided some back story to the character, specifically the origin of his fear of snakes, his use of a bullwhip, the scar on his chin, and his hat; the film's epilogue also reveals that "Indiana" is not Jones's first name, but a nickname he took from the family dog. The film was a buddy movie of sorts, teaming Jones with his father, Henry Jones, Sr., often to comical effect. Although Lucas intended to make five Indiana Jones films, "Indiana Jones and the Last Crusade" was the last for over eighteen years, as he could not