Scooter (Muppet) and Nelson were also known for being vocally talented, and Scooter sat in with the band on occasion (as a vocalist or guest musician). Scooter and Floyd's rendition of "Mr. Bass Man" symbolizes Hunt and Nelson's relationship. Scooter has appeared in most Muppet films and television specials. In "The Muppet Movie", Scooter acts as The Electric Mayhem's manager. In "The Great Muppet Caper", he was a resident of the Happiness Hotel. In "The Muppets Take Manhattan", he was among the core group who attended college together and struggled to put their show on. In this appearance, he was the treasurer
The Muppet Show sought after for various celebrities to appear in. Many episodes featured actors, such as Steve Martin, Don Knotts, Harvey Korman, and Dom DeLuise; some featured veteran performers like Ethel Merman and Rita Moreno; some featured well-known pop singers, including Elton John, Diana Ross, Linda Ronstadt, and Leo Sayer. Sayer's show used his hit "The Show Must Go On": he changed the lyrics in the second verse slightly, from "I wish I could tear down the walls of this theatre" to "I wish I could tear down the walls of this Muppet theatre". The last episode, in 1981, featured then-James Bond