Cynthia Adler is a voice actress who performed as a puppeteer on two episodes of The Muppet Show. Jim Henson and Frank Oz trained Adler in the art of Muppetry and, despite her short stay with the show, she created a few memorable characters. Her Muppet roles include Cynthia Birdley, the duck from episode 113, and the pink creature who sang "You Do Something to Me" in episode 112. In 1975, Adler played the Invisible Girl in a short-lived Fantastic Four radio series. The cast also included Bill Murray as the Human Torch.