Several of The Simpsons' regular cast members have voiced hundreds of characters on the show, but there's one clear winner.

Speaking to Men's Journal, Cassidy, who is British by birth, explained how she found Susan Duffy's voice. Literally.

They contained teases for upcoming titles—narrated by a very ominous voice that added gravitas to whatever was coming up in the next few months. No one could truly pinpoint an actor to give them ...