Funny Valentine is the main antagonist of JoJo's Bizarre Adventure - Part VII: Steel Ball Run. He is the 23rd president of the United States in the Steel Ball Run universe and the mastermind behind the Steel Ball Run race. He watches the competition from behind the curtains and hopes to gather the Saint's Corpse to use the holy relic to further the United States of America's interests. Valentine is a Stand User, wielding his Dirty Deeds Done Dirt Cheap and its dimensional abilities to travel across parallel universes.

Valentine's Stand, Dirty Deeds Done Dirt Cheap (D4C), enables him access at any time to any number of alternate worlds/universes/dimensions; where if desired he may swap bodies with his counterparts, granting him pseudo-immortality.