Mercy Graves is a supervillain appearing in multimedia and American comic books published by DC Entertainment and DC Comics. Created for the DC Animated Universe (DCAU), she first appeared in 1996 on Superman: The Animated Series as the personal assistant and bodyguard of Superman's archenemy Lex Luthor, returning in Justice League and Justice League Unlimited, voiced by Lisa Edelstein. She has since been introduced into comic books published by DC Comics.

Superman: The Animated Series is an American animated superhero television series based on the DC Comics character Superman. It was produced by Warner Bros. Animation and originally aired on Kids' WB from September 6, 1996, to February 12, 2000. It was the second series in the DC Animated Universe after Batman: The Animated Series, and like its predecessor, it has been acclaimed for its writing, voice acting, maturity, and modernization of the title character's comic-book mythos.