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 actor Roger Moore. Mark Hamill appeared in one episode as both himself and Luke Skywalker, his role in the "Star Wars" film series. One episode featured staff writer, Chris Langham, (who wrote some episodes of this show, starting in series 3) guest starring due to Richard Pryor being unable to make the taping of the episode at the last minute. An early tradition was to present the guest star with a Muppet likeness of themselves as a parting gift at the end of the show, but this only lasted for the first two episodes produced, featuring Connie Stevens and Juliet