Joker

Based on the provided articles, "Joker" appears in the context of a comparison between DC Comics and Marvel. One article mentions Batman potentially developing a "Joker-like smile," suggesting DC Comics, the publisher of Batman, Superman, and Wonder Woman, is experiencing a resurgence and may be overtaking Marvel in popularity after being in a secondary position for half a century. The reference to the Joker is metaphorical, implying a shift in power dynamics within the superhero comic book industry. The other article discusses the expansion of a fast-food chain into France and is unrelated to the "Joker" reference. Therefore, the current relevance of "Joker" is tied to the ongoing competition between DC and Marvel and the potential shift in dominance within the comic book market.