Before we get to Leverage, let’s talk about foils and doppelgängers.
A foil, in literary terms, is a character who stands in comparison to another character, and by contrast, illuminates the second character. It takes its name from the jeweler’s practice of backing their diamond cases with foil to make the gems shine brighter, but in fiction it’s done to deepen the reader or viewer’s understanding of character. Take Macbeth and Banquo, for example (because their my favorite example). Continue reading