There are two kinds of Elsewhere Fic. The first is clearly inspired by the canon, but happens entirely elsewhere. It contains none of the canon events or characters, often none of the locations, only Original Characters. So, there's very little chance of damaging continuity or having canon characters act Out Of Character. So no Kirk, no Mulder, no Joey Potter ... just original characters. Thus you might have (say) a Buffy fic dealing with a Slayer in Ancient Egypt or a Star Wars fic about a Wookiee Jedi in the Old Republic. Examples of Elsewhere Fic include: