Why Do Some Villains Have More Memorable Voices Than Heroes?

Have you ever noticed that you can sometimes remember a villain's voice years after watching a movie, show, or playing a game, even when you struggle to remember the hero's? Villains often get distinctive voices—deep, unusual, exaggerated, calm, raspy, or strangely cheerful—which immediately make them stand out. What villain has a voice you could recognize almost instantly, and what makes it so memorable?