Dirty Deeds Done Dirt Cheap, usually shortened to D4C, is the Stand of Funny Valentine, the main antagonist of JoJo's Bizarre Adventure: Steel Ball Run, the manga's seventh part. In the story, Valentine can move between parallel worlds, a power that makes his appearances feel uncanny and impossible to escape. JoJo fans have turned that reputation into a shorthand for confident villains and reality-bending twists, and the clip is now reused in anime edits, reaction videos and short-form memes whenever a reveal needs instant menace.