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 to various prior adventurers, aspects of Indiana Jones also directly influenced some subsequent characterizations: Indiana Jones Dr. Henry Walton "Indiana" Jones, Jr. is the title character and protagonist of the "Indiana Jones" franchise. George Lucas created the character in homage to the action heroes of 1930s film serials. The character first appeared in the 1981 film "Raiders of the Lost Ark", to be followed by "Indiana Jones and the Temple of Doom" in 1984, "Indiana Jones and the Last Crusade" in 1989, "The Young Indiana Jones Chronicles" from 1992 to 1996, and "Indiana Jones and the Kingdom of the Crystal