 And that pushed the villains that much farther into extremes, because right after Robin's debut, you had Joker, who was evil and dangerous a villain, as there was. You had Catwoman, Two-Face, and the Penguin, and the Riddler, who are just as iconic as any heroes from that era. They really tapped into something. They knew what would be popular. They knew what would sell. They knew what the kids liked.