A fantasy trope is a specific type of literary trope that occurs in fantasy fiction. Worldbuilding, plot, and characterization have many common conventions, many of them having ultimately originated in myth and folklore. J. R. R. Tolkien's legendarium for example, was inspired from a variety of different sources including Germanic, Finnish, Greek, Celtic and Slavic myths. Literary fantasy works operate using these tropes, while others use them in a revisionist manner, making the tropes over for various reasons such as for comic effect, and to create something fresh.